How to open windows defender antivirus settings. Why Windows Defender won't start

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≡ 26 May 2016 Heading: Computer educational program 4 404 Views

Let's talk about how to turn on Windows Defender 10, what it is and whether you need it at all. Windows 10 Defender is a set of applications from Microsoft designed to check for and track all suspicious changes and, of course, the removal of unsafe components. Various setting options are available. He puts on "his shoulders" some activity of the antivirus, if there is none. But, as you yourself understand, this does not mean that they should not exist at all. An anti-virus program must always be installed on the computer. What actually Windows 10 Defender itself constantly notifies. Let's take an example in 7k.

How to enable Windows 10 defender

At the same time, press the hot keys + R, enter the command Windows regedit. The editor will launch.

Then, go to the branch

HKEY_LOCAL_MACHINE\ SOFTWARE\ Policies\ Microsoft\ Windows Defender

and set the value "0" for the DisableAntiSpyware parameter.

In the Real-Time Protection subsection in DisableRealtimeMonitoring, if any, you must also set the value to "0".

Close the registry window. Everything! In the Start menu search, you should now enter the phrase "Windows Defender" (without quotes) and run it.

How to enable Windows 10 Defender using the Local Group Policy Editor

To open the Local Group Policy Editor, click the Start button, select Run, (or press the +R hotkey again) then type gpedit.msc.

In the window that opens, go to "Computer Configuration" -> "Windows Components" -> "Endpoint Protection".

It is very important to keep in mind that if the “Enabled” function is set in “Endpoint Protection”, as shown in the screenshot above, then click on it and change it to “Disabled”.

I want to note right away - this method is suitable only for owners of 10k Professional, since only RLGK is present in it. Not available in the versions below.

Defender's tasks

Watch out for security
Check for module updates
Control the operation of applications, certain files that run with the web browser.
Monitor drivers and services
Control autostart
Watch for changes in browser settings
Regulate the functioning of installed and in the process of installing software

It is worth mentioning right away that tasks can be changed depending on the type of version.

Conclusion

If for some reason nothing happened, various warnings and errors appear when you start Windows Defender 10, do the following ...

a) The first step is to check the integrity of the files.

b) We look at the inclusion of the service itself. + R, enter the services.msc command.

That's all. If you know more ways to cut in the comments, it will be very interesting and useful to know. Thanks!

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How to turn on Windows 10 defender?

The native anti-malware tools in the innovative Windows 10 operating system are an advanced contribution to the security of user data from developers from Microsoft. The OS Defender is responsible for the functionality of the built-in anti-virus complex of the PC.

According to the analytical calculations of world experts, the built-in protection of Windows 10 demonstrates sufficiently high rates that can compete with the most popular antiviruses. Free Defender practically does not affect system resources, facilitating the work of memory, as well as the computer's processor.

You can enable the built-in defender as follows:

It is worth noting that the system defender conducts constant diagnostics of RAM for the presence of various threats. To monitor the OS, all the necessary components are involved, the user does not need to manually make any changes.

Another option to enable the defender:

How to turn off Windows 10 defender?

The user may need to turn off the full-time defender in situations where a game or program has been downloaded from a trusted source, but the defender refuses to perform such an installation.

Disabling Windows 10 Defender is done as follows:

In the "Settings" section, go to the "Update and security" tab.
Switch the slider opposite the "Real-time protection" item. This option disables protection only temporarily.

How to disable Windows 10 defender completely using non-standard methods?

You should be aware that when installing any third-party anti-virus program on a PC system, the defender will be turned off until it is removed. Users who intend to deactivate the OS Defender functionality permanently have two options for implementing what they want. Consider the first way:

www.comp.site

How to disable Windows 10 defender: description of all methods

Windows Defender is Microsoft's own antivirus, which has been built into all versions of their operating systems since 8. The standard protection system works in such a way that if you do not install a third-party antivirus product, it guards the security, but as soon as you download and install another antivirus, the tool from Microsoft will turn off automatically and give way to a new program. Windows Defender used to be scolded, but after the 2016 update, it was seriously improved and began to receive more and more positive reviews. Be that as it may, the choice of an antivirus is your purely personal matter, so in this article we will take a closer look at the topic - how to disable Windows 10 defender permanently and temporarily.

We will talk not only about how to neutralize a regular antivirus, but we will also give several ways to do this, of course, we will also show how to disable the program for a while, so that later you can restore protection. This may be necessary, for example, when installing a game with a crack. A situation has been noticed when Windows Defender tells us that the application is disabled and does not want to work. We will also consider this problem.

After the August 2016 update, the antivirus icon began to appear in the taskbar. The icon can be removed, while the defender himself will continue to work quietly. To do this, we do the following:

Open the task manager (right click on an empty space on the taskbar).

The task manager itself will open, we need to go to the "Startup" section and right-click on the entry "Windows Defender notification icon", select "Disable" in the menu that appears.

After that, the icon will leave the taskbar and will no longer be displayed. You must restart your computer for the changes to take effect.

Why should you disable Windows Defender?

You can disable any antivirus, like Windows Defender, only temporarily or for the purpose of replacement. There are situations when we want to install a useful program, but for some reason it is perceived as a virus. That's when you need to force the defender to change his mind. But in such a situation, it would be correct not to deactivate the antivirus, but to add the program to the "white list". We will describe how this is done below.

Another option that requires disabling Windows Defender is to replace it with another antivirus that you download from the network yourself. Microsoft has provided for the situation of replacing security software with third-party and when installing another antivirus, the defender is automatically disabled. Sometimes this does not work and then you have to turn off the program manually.

Disable Windows 10 Defender

Let's start by disabling Windows Defender. Please read the previous section carefully before doing this. Deactivating a regular antivirus without installing a new one can lead to the loss of personal data or a system crash.

Checking antivirus activity

Initially, you need to open the control panel, namely the section of the security center. The easiest way to do this is to search for "tens". Click on the magnifying glass on the taskbar and enter the word “defender” there, then select the result we need from the search results.

If you see a window in which the defender notifies us that the PC is completely secure, then it is active and we can proceed to disable it. If, on the contrary, no action is required, the antivirus is already disabled.

Disable Windows Defender using the program interface

This is the first, easiest and safest way to disable the standard antivirus. If this option does not work for some reason, you can move on to more complex and effective solutions, we will describe them below, but for now we will start disabling Windows 10 Defender through its software interface.

Open the defender itself (we described how to do this in the previous section). You can also run antivirus from Microsoft through the system tray. To do this, simply double-click on the program icon.

In the window that opens, click on the gear icon, this is the program settings that we need.

In the settings window, select the "Virus and threat protection settings" section.

Disable the triggers indicated in the screenshot.

The protection will be deactivated, but after a few minutes it will turn on again. This option is suitable only for those users who need to stop the antivirus for a while, for the rest there are more effective instructions.

Disabling Antivirus Using the Group Policy Editor

You can completely disable Windows 10 Defender using a regular tool - the local group policy editor. First, let's run it, you can do it through the "Run" program. Use the keyboard shortcut Win+R.

Open the utility and enter the command "gpedit.msc" without quotes into the text field, then click "OK".

Open the path indicated in the screenshot in the left panel of the editor and select the “Turn off Windows Defender antivirus software” key on the right side of it.

Double-clicking the left mouse button on the selected item will open a new window in which we can turn off the defender. Set the checkbox pointer to the "Disabled" position and click "OK".

After the system restarts, Windows Defender will be disabled.

The Group Policy Editor does not work in Windows 10 Home, in which the operation will have to be performed through the registry.

Disable Windows 10 Defender via Registry Editor

Consider another way that will allow us to deactivate the regular antivirus service. To do this, we need a registry editor, it is present in all versions of Windows.

Launch the Run utility using the Win + R hotkeys. Next, enter the command "regedit" without quotes and click "OK".

The registry editor will open, we need to follow the path indicated in the screenshot.

Now you need to create a new key in the right pane of the editor. To do this, click on an empty space with the right key of the manipulator and select the item "Create" - "DWORD Value (32 bits).

Enter the name of the new key "DisableAntiSpyware" and press "Enter".

Double-click to launch the created entry and set the value to "1". This will disable Windows Defender, if necessary, it can be activated again by setting the value of the key to "0".

Attention! If you already had a key with the name "DisableAntiSpyware", just set the value to "1", you do not need to create anything.

Done, the system will notify you that Windows Defender is disabled. The icon in the notification area will disappear only after restarting the computer.

Disable Windows 10 Defender Using Third Party Software

If for some reason it was not possible to disable the native antivirus, you can resort to another method - third-party programs. There is a huge amount of such software, but it is better to use a utility we have tested called Win Updates Disabler. In one of the articles we talked about disabling automatic system updates, this program was also used there. You can download the application a little lower, but for now let's figure out how to work with it.

We open the program that you have already installed by this time and put a tick in front of the “Turn off Windows Defender” item (other items should not be checked).

The program will notify us that the changes have been applied and for them to take effect, you need to restart the computer. We agree and click "OK".

Download Win Update Disabler

You can also use another, more functional Destroy Windows 10 Spying or DWS program, which you can also download on this page. The application was created to disable spyware in Windows, but it also has the function we need - deactivate the defender. Let's look at how this is done.

Download the program and run it (no installation required). Go to the "Settings" tab, check the box next to "Turn on professional mode" and "Turn off Windows Defender".

Now you need to apply the changes, go to the "Home" section and click on the button indicated in the screenshot.

After pressing the key, Windows Defender will turn off and we will be prompted to restart the PC. We do this by first saving all the data and closing the programs.

Attention! When working with DWS, not only the standard antivirus is disabled, pay attention to the screenshot before applying the changes.

Download Destroy Windows 10 Spying

Disabling Windows Defender with PowerShell

There is another way to disable the built-in protector. To do this, you will need to launch a command prompt or PowerShell. The choice of environment is up to you, but in both cases, the tool must be called exclusively on behalf of the administrator. Let's get started.

Again, use the search in the taskbar, click on the magnifying glass icon, enter the phrase "PowerShell" in the search field and right-click on the result, selecting "Run as administrator".

When the shell opens, paste the command "Set-MpPreference -DisableRealtimeMonitoring $true" into it without quotes and press Enter. The system will think for a while and go back to standby mode. This indicates the success of the operation. It remains to close the window and reboot the system.

The same can be done through the command line, do not forget to run it as an administrator.

Disabling notification of lack of protection

The protection is disabled, but now another problem has appeared, constant notifications that our computer is no longer protected and is at risk, this is for security purposes, but if you disable the antivirus deliberately, you should know what you are doing.

Let's turn off notifications that only interfere with work.

Using the standard Windows 10 search tool, we find and open the Security Center.

As you can see, the regular antivirus is already disabled.

Click on the gear icon and go to the settings of the Windows Security Center.

We switch the trigger and turn off notifications, everything is simple. Here you can also remove messages from the firewall.

Add an app to the Windows 10 Defender whitelist

It is not necessary to disable the antivirus. You can simply add the program that he "scolds" to the so-called trusted zone or white list. We will consider an example of adding a file or folder to trusted ones using the Windows 10 Pro 64-bit defender as an example. Let's get started.

We open our antivirus by clicking on its icon in the system tray (the program can also be launched through the search, in the manner described above). Click on the gear icon and go to the program settings.

Click on the inscription: "Virus and Threat Protection Settings".

Scroll down to "Add or remove exclusions" and click on it.

Click on the inscription: "Add an exception" and in the drop-down menu select the object that interests us.

There are the following options:

file. Allows you to add a specific file in a single amount, for example, .exe;
folder. Allows you to add an entire directory to exclusions. It may be necessary when there are too many objects and it is inconvenient to add them one at a time;
file type. Adds a file extension and excludes all objects with this extension from the scan area;
process. You can enter the name of the process that the defender should not pay attention to.

Let's add to quarantine using the example of a directory. Click on the plus sign and select "Folder". In the window that opens, left-click on the desired directory and click the "Select Folder" button.

The folder has been added to the antivirus exclusions, now it will not scan it and look for viruses. From here you can also delete the object and force the program to check it again.

Summing up

Many users ask the question - how to remove Windows Defender? This cannot be done, but we have learned how to turn it off in several ways at once. It is important to understand all the danger that our computer is exposed to without antivirus software installed on it. You need to deactivate protection only for the purpose of replacing it as soon as possible or for a short session of installing a program that the defender perceives as a virus.

Video about disabling Windows 10 defender

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How to turn off Windows 10 defender

1 Disable
2 Group policies
3 If disabled

How to deal with malware? Put protection in the form of special programs - antiviruses. Of course, each antivirus may or may not suit the user, so you first need to choose this useful program well for yourself. But until the user has installed at least one of these applications, Windows 10 has its own special Defender antivirus. Yes, this time they have foreseen that as well. Such a program provides at least some protection at the initial stage of the operating system.

However, Defender can interfere with other applications from time to time, so it's sometimes a good idea to turn it off. For example, you need to install a certain utility, and the defender defines it as malicious software. If, on the contrary, the basic antivirus is disabled, and you want to enable it in order to protect your computer as quickly as possible, then this will be written below.

Disable

To disable the wonderful Microsoft Defender, you need to do the following:

Click on the Start button with the right mouse button.
Select Windows Defender.

A special window will open where you can see all the parameters. To turn off the defender, open the Settings and turn off the Real-time protection item.

But Windows 10 was developed by not such fools, so after about fifteen minutes the system will try to turn on the defender again. However, the developers provide the ability to disable Defender for a very long time.

Group Policies

Let's go in a more complicated way so that the defender no longer works:

You need to press Win and R on the keyboard, then enter gpedit.msc.

Next, go to Computer Configuration.
Let's move on to Administrative Templates.
Click on Windows Components.
Choose our Windows Defender or Defender.

In the right part of the window that opens, click on Turn off Windows Defender.
Now, in the menu of this option, set the dot opposite Enabled if Windows Defender needs to be disabled.

If disabled

If such a window appears, then this may indicate:

Standard Defender in Windows 10 does not work because another antivirus is running. If this antivirus is removed, then the standard protection against Windows 10 will work automatically.
The user himself decided to disable the defender.

In order for standard protection to work in Windows 10, you can simply click on the notification. Further, all work will be carried out automatically. If group policies were affected, then you need to do the following manipulations.

Should you trust the standard protection from Microsoft? More yes than no. But do not forget that the main reason for the penetration of viruses into the operating system is a person. Uploaded a dubious file for free, here's a Trojan already on board. Agreed on some resource with a proposal, here you have a paid subscription and issued. So it follows:

Download files only on trusted sites.
Be wary of all files with .exe permission.
As little as possible visit resources with information of dubious and prohibited content.
Do not click the button anywhere in the browser.
Do not register users with the same passwords.
Do not leave passwords on suspicious resources.

How to disable Windows 10 Defender permanently or temporarily?

Hello! Many Windows 10 users are faced with the problem of having to disable the built-in antivirus. There are situations when you need to disable automatic virus protection for a while. For example, Defender very often swears at the Windows 10 activator or hacked games.

Today I decided in this article to talk about how to disable Windows Defender 10 permanently. I will be glad to your comments and additions!

1. What is Windows 10 Defender?

This program has protective functions, warning your computer from malicious software. For the most part, Defender is an antivirus from Microsoft. It continues to perform its functions until another antivirus appears on the computer, since most of them turn off the "native" protection of your computer. Ongoing research made it clear that Windows Defender has been improved, so that its functionality has become similar to that of other antivirus programs.

Review of the best antiviruses of 2017 - http://pcpro100.info/luchshie-antivirusyi-2017-goda/

If you compare which is better - Windows Defender 10 or antivirus, you need to understand that antiviruses are both free and paid, and the main difference is the degree of protection they provide. Compared to other free programs, Defender is not inferior, and as for paid programs, it is necessary to individually evaluate the levels of protection and other functions. The main reason for disabling the antivirus is that it prevents the installation of some applications and games, which causes discomfort to users. The following will provide information on how to disable Windows Defender 10.

2. How to disable Windows 10 defender temporarily?

First you need to find the Defender settings. The method is simple, I tell you step by step:

1. First of all, go to the "Control Panel" (by right-clicking on the "Start" menu and selecting the required section);

2. In the "PC settings settings" column, go to "Windows Defender":

3. When you start the program, "Your PC is protected" should be displayed, and if this message was not there, it means that there is another anti-virus program on the computer, in addition to the defender.

4. Go to "Windows Defender". Path: Start / Settings / Update and security. Then you need to deactivate the "Real-time protection" function:

3. How to disable Windows 10 defender permanently?

The above method will not work if you need to disable Windows 10 Defender permanently. It will stop working, but only for a certain time (usually no more than fifteen minutes). This will allow you to perform those actions that were blocked, such as activating the program.

For more radical actions (if you want to turn it off forever), there are two ways: using the local group policy editor or the registry editor. Remember that not all versions of Windows 10 will fit the first item.

For the first way:

1. Call the "Run" line using "Win + R". Then enter the value "gpedit.msc" and confirm your actions; 2. Go to "Computer Configuration", then "Administrative Templates", "Windows Components" and "EndpointProtection";

3. The screenshot shows the item "Turn off EndpointProtection": hover over it, double-click and set "Enabled" for this item. Then we confirm the actions and exit (for reference, the function used to be called “Turn off Windows Defender”); 4. The second method is based on the registry. Using Win + R, we enter the value of regedit;

5. We need to get to "Windows Defender" in the registry. Path: HKEY_LOCAL_MACHINE\ SOFTWARE\ Policies\ Microsoft;

6. For "DisableAntiSpyware", select the value 1 or 0 (1 - off, 0 - on). If this item does not exist at all, you need to create it (in DWORD format); 7. Done. Defender has been disabled and restarting the program will show an error message.

4. Disabling Defender on other versions of Windows

For the version of Windows 8.1, there are significantly fewer items to complete. Necessary:

1. Go to the "Control Panel" and go to "Windows Defender"; 2. Open "Parameters" and look for "Administrator":

3. We remove the bird from "Enable the application", after which a corresponding notification will appear.

5. How do I turn on Windows Defender 10?

Now you need to figure out how to enable Windows 10 Defender. There are also two methods, as in the previous paragraph, and the methods are based on similar actions. As for enabling the program, this is also an actual problem, since users do not always disable it themselves: the use of programs that are designed to disable spyware also causes the defender to be disabled.

The first way (using the Local Group Policy Editor):

1. Remember that for the "Home version", this method will not work, because it simply does not have this editor; 2. Call the menu "Run" ("Win + R"), enter the value of gpedit.msc, and then click "OK";

3. Directly in the menu itself (folders on the left), you need to get to "EndpointProtection" (via Computer Configuration and Windows Components);

4. In the right menu there will be a line "Disable EndpointProtection", double-click on it and select "Not configured" or "Disabled". You need to apply the settings; 5. In the EndpointProtection section, specify the mode "Disabled" ("Not configured") in the "Turn off real-time protection" column (Real-time protection). Apply settings;

6. For the changes to take effect, you must click "Run" in the program menu.

The second way (using the registry editor):

1. We call the "Run" service ("Win + R") and enter regedit. We confirm the transition; 2. In the menu on the left, find "Windows Defender" (The path is the same as with shutting down using the registry); 3. Then you should find the "DisableAntiSpyware" parameter in the menu (on the right side). If it is present, double-click on it and enter the value "0" (without quotes); 4. This section should have an additional subsection called Real-Time Protection. If it is present, you should also double-click on it and enter the value "0";

5. Close the editor, go to the Windows Defender program itself and click "Enable".

6. How to uninstall Windows 10 defender?

If after all the points you still get errors in the Windows 10 defender (error code 0x8050800c, etc.), you should call the Run menu (Win + R) and enter the services.msc value;

The "Windows Defender Service" field should indicate that the service is enabled;
If there are various kinds of problems, you need to install FixWin 10, where in "System Tools" use "Repair Windows Defender";

Then check the OS system files for integrity;
If you have Windows 10 restore points, use them.

And finally, consider the option of how to permanently remove Windows Defender 10 from your computer.

1. First of all, you need to disable the defender program using one of the above methods (or install the “Do not spy” program and select the “Disable Windows Defender by applying changes” item);

2. After you have disabled it, you should restart your computer and install "IObit Unlocker"; 3. The next step is to launch the IObit Unlocker program, where you should drag the folders with the protector; 4. In the "Unblock" column, select "Unblock and delete". Confirm deletion; 5. It is necessary to perform this item with folders in "Program Files X86" and "Program Files";

6. Program components have been removed from your computer.

I hope the information on how to disable windows 10 defender helped you.

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Defender is an anti-virus component preinstalled in the Windows 7 operating system. If you are using third-party antivirus software, then it makes sense to stop working with Defender, as there is little practical use left in its functioning. But sometimes this component of the system is disabled without the knowledge of the user. Turning it back on is quite simple, but it’s not always possible to figure it out on your own. This article will consist of 3 ways to disable and enable Windows Defender. Let's get started!

Windows Defender is not a full-fledged anti-virus program, so comparing its capabilities with such mastodons of computer protection software development as, and others, is incorrect. This OS component allows you to provide the simplest protection against viruses, but you can’t count on blocking and detecting some kind of miner or a more serious threat to computer security. Also, Defender may conflict with other antivirus software, due to which this service component has to be turned off.

Let's say you are satisfied with the work of this antivirus program, but because of some recently installed program or as a result of setting up a computer by another person, it turned out to be disabled. No problem! As mentioned earlier, instructions for resuming the work of the Defender will be indicated in this article.

Disabling Windows Defender 7

You can stop Windows Defender by turning it off through the interface of the Defender program itself, by stopping the service responsible for its functioning, or by simply removing it from the computer using a special program. The latter method will be especially useful if you have very little disk space and every megabyte of free disk space is valuable.

The easiest way to disable this component is in its settings.

We need to get into "Control Panel". To do this, click on the button "Start" on the taskbar or on the button of the same name on the keyboard (engraving on the key Windows matches the key pattern "Start" in Windows 7 or later versions of this OS). In the right part of this menu we find the button we need and click on it.
If in the window "Control Panels" view view enabled "Category", then we need to change the view to "Small Icons" or "Large Icons". This will make it easier to find the icon "Windows Defender".

There is a button in the upper right corner of the content window. "View" and the specified view. We click on the link and select one of the two types of viewing that suits us.
Finding an item "Windows Defender" and click on it once. The icons in the Control Panel are arranged chaotically, so you will have to run your eyes through the list of programs located there.
In the opened window "Defender" on the top panel we find the button "Programs" and click on it. Then we press the button "Parameters".
In this menu, click on the line "Administrator", which is located at the very bottom of the left options panel. Then uncheck the option "Use this program" and press the button "Save", next to which the shield will be drawn. In Windows 7, a shield indicates actions that will be performed with administrator rights.

After disabling the Defender, this window should appear.

Click "Close". Done, Windows Defender 7 is disabled and should not disturb you from now on.

Method 2: Disable the service

This method will allow you to disable Windows Defender not in its settings itself, but in the system configuration.

Method 3: Uninstall using a third-party program

Standard add and remove programs will not allow you to uninstall a component built into the operating system, but Windows Defender Uninstaller is easy. If you decide to remove the built-in system tools, be sure to save your important data to another drive, because the consequences of this process can seriously affect the further operation of the OS as a whole, up to the loss of all files on the drive with Windows 7 installed.

Enabling Windows Defender 7

We will now look at methods for enabling Windows Defender. In two of the three methods described below, we only need to check the box. We will do this in the Defender settings, system configuration and through the Administration program.

Method 1: Program settings

This method repeats almost the entire instruction for disabling through the Defender settings, the only difference is that the Defender itself will offer us to enable it as soon as it is launched.

We repeat the instruction "Method 1: Program settings" from 1 to 3 step. A message will appear from Windows Defender notifying us of its disabled state. Click on the active link.

After some time, the main window of the antivirus will open, displaying data on the last scan. This means that the antivirus is turned on and is completely ready for work.

Sometimes, the next time you start Windows Defender, it will not turn on and error 0x800704ec will appear on your monitor with the following message:

This program has been blocked by group policy. For more information, contact your system administrator.

It is clear that when this message appears, you will not be able to start Windows Defender. In fact, this error is not a “bug” per se, as the software and operating system are specifically designed in this manner.

The reason for the “error” is that in addition to Windows Defender, a third-party antivirus is also running on your computer, and it is this antivirus that disables Windows Defender in order to avoid software conflicts in your operating system.

To get rid of this mess, try the methods below to fix error 0x800704ec.

Method #1 Removing Third Party Antivirus

The problem can be fixed by simply uninstalling your antivirus software so that only Windows Defender remains on your computer from protection. To do this, do the following:

Press the keys at the same time Win+R, write in the line "Run" appwiz.cpl and press Enter.
Locate the antivirus that is causing the problem, right-click on it and select Uninstall.
Confirm all requests if they appear on your screen.
After the antivirus removal process, restart your computer to confirm the changes.

Your Windows Defender should now run smoothly and error 0x800704ec should be gone. However, if it still does not start, then try the following:

Right-click on "Start" and select "Control Panel" from the context menu.
Go to "Windows Defender".
Make sure your Windows Defender is on.

If this method did not help you, then you can use the solution for the problem with error 0x800704ec through the Windows Registry.

Method #2 Adjustment in the Windows Registry

In some cases, the first method may not work, but don't worry, there is another method that should fix the 0x800704ec error and that is to edit the Windows Registry. Now we will explain everything you need to do:

Click Win+R, type regedit and press Enter to launch the Windows Registry window.
Next, go through "HKEY_LOCAL_MACHINE - Software - Policies - Microsoft".
Select the "Windows Defender" section.
Double click on the "Default" entry.
Set "Value - 0".
Click OK.
Then press the key combination Win+X and select Control Panel.
Go to the Windows Defender section and make sure that it is in the activated state.

If the above steps did not help you with error 0x800704ec when starting Windows Defender, then try these steps:

Repeat the steps with which you opened the Windows Registry and follow the same path.
Select "DisableAntiSpyware".
Double-click on the "Default" entry.
Set "Value - 0".
Repeat the steps for checking Windows Defender and make sure that it is in an activated state.

Method #3 Local Group Policy

Sometimes the problem may not be with Windows Defender and the system itself, but that Defender may be disabled through Local Group Policy. If the error 0x800704ec arose precisely because of this, then fixing this situation is not difficult. To do this, do the following:

Press key combination Win+R, enter in the empty line gpedit.msc and press Enter to open the Local Group Policy Editor.
Next, go to "Computer Configuration - Administrative Templates - Windows Components - Windows Defender".
Double-click the "Turn off Windows Defender" policy.
You will see a window called "Turn off Windows Defender". Make sure that the checkbox in this box is next to the "Not configured" option.
Then click "Apply" and "OK".

After following the steps, try running Windows Defender and make sure the 0x800704ec error has been resolved.

Method #4 Enable Windows Defender Service

If you don't have any antivirus programs installed on your computer and you still can't turn on Windows Defender, then there is a chance that the service of this software is simply disabled. In this case, it must be launched. To do this, do the following.

Turning on Windows Defender in Windows 10 is the right solution for all users, because it is a built-in antivirus that monitors all received files and opened pages on the fly. It will prevent malware from entering your computer. If you have not installed an antivirus from another manufacturer, then this service will help secure your PC. Below we will consider all the ways to enable the "native" antivirus.

Through parameters

The most obvious way to enable Windows 10 Defender is to use the built-in graphical interface provided to manage the service.

First you need to launch its control center. This can be done in the options window, or you can use the search.

On the left is an icon menu. The shield icon means going to the protection settings area. On the home screen, you see a warning that you need to turn on Windows Defender 10.

Press the power button. The warning will remain, since the defender consists of two parameters: the antivirus itself and the cloud one.

The first click enabled Windows Defender in Windows 10, now click again to finish activating it.

All this can be done in the advanced options.

With such a shutdown of the service, it will automatically start upon reboot - the developers have provided for the automation of the security installation.

However, sometimes we find ourselves in a situation where Windows 10 Defender does not turn on at all. You see a message that the service is managed by someone else, or an error message appears when you try to restart.

This is because a user or program has disabled the service at the system level, in the registry, or in the Group Policy Editor. So, enable Windows Defender in Windows 10 in the same way.

We use the registry

We launch a window for entering directives +[R] and type regedit .

Select HKEY_LOCAL_MACHINE\ SOFTWARE\ Policies\ Microsoft\ Windows Defender.

On the right side, look for the DisableAntiSpyware variable and set the value to zero by opening the properties by double-clicking.

Check that in the "Real-Time Protection" section, all parameters starting with the word "Disabled" also have zero values.

Changing policy

This option is only suitable for professional and enterprise versions. The home does not provide such a function (in fact, the editor can be installed).

Open the policy management window: command execution window + gpedit.msc .

In the computer configuration area we find administrative templates. Clicking on the arrow will expand the list.

Next, we need the operating system components and a link to the antivirus program.

Here you need to change the value of the service shutdown parameter to. Open properties by double clicking on it.

Win-updates-disabler program

This program provides a convenient interface for managing components, while the portable version does not need to be installed, you can simply open the file from the folder. Downloading.

Enabling Windows Defender in Windows 10 is done on the Enable tab. Put a tick in the required line.

You can enable both the program itself and its service center. It is worth noting here that the service itself and the center of its settings are different components. Disabling the center does not disable the antivirus. You just lose the GUI.

Let's talk about how to enable the Windows 10 Defender Security Center: open the registry again and go to Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SecurityHealthService.

Set the start variable to 2.

After the restart, the center interface will become active again.

Many users do not use third-party antiviruses and rely on the built-in solution from Microsoft. With each new major system update, the antivirus shows better and better results. At the moment, it shows itself no worse than free antiviruses, but with a lower load on the system. In this article, we will describe the main issues and difficulties that describe how to enable Windows Defender (Windows) 10.

Windows Defender. Inclusion, problems and complexities

The Creators Update (version 1703) introduced a new application that includes the main device security settings - Security Center. It includes virus and threat protection, account and family sharing settings, firewall settings, security settings, and more.

If you want to know how to turn on the Windows 10 Defender Security Center, then we will talk about this in more detail below.

First you need to open Security Center. To do this, display the hidden icons or find the "Shield" symbol in the tray. Depending on the state of the system, it can be "red" - there is a threat, "yellow" - a notification or warning, and "green" - everything is fine. Double click on the icon to open.

The main window of the Security Center displays the statuses of all the main indicators - firewall protection, accounts, viruses, applications, security and performance.

The main role of the Defender is to search for and protect against viruses and malware. Therefore, the main thing is that the protection is turned on. To do this, follow these steps:

In the Security Center open " Virus and Threat Protection »
Go to " Virus and threat protection settings »
Make sure cloud and real-time protection are turned on.
If suddenly they are turned off, then another antivirus may be installed on your device, which works more priority than the built-in one from Microsoft.

In the event that you want to know what to do if Windows Defender is disabled and how to fix it, the above tips will definitely help you.

There are cases when Windows 10 defender suddenly turned off, how to turn it on in such a situation: we advise you to simply check for third-party antiviruses. Some device threat protection programs automatically turn off the default Defender in favor of their firewall and security features.

"Don't forget to check for a third-party antivirus"

Problems and difficulties with the Defender

Some users may have encountered the fact that they cannot start it, because the switches are inactive (as in the screenshot).

Sometimes this situation may be accompanied by the error "Windows Defender is disabled by group policy", how to enable it if you have Home version of the system and its presence is not implied? Let's look at several possible solutions to this error.

How to enable via group policy

If you are using the Pro or Corporate version of the system, there is a possibility that the built-in antivirus is simply disabled through group policies. Follow these steps to check it out:

Press Win+R and type msc to open the Group Policy Editor
Pass "Computer Configuration" - "Administrative Templates" - "Windows Components" - "Windows Defender Antivirus"(The section was called Endpoint Protection in versions prior to 1703).
Choose an option "Turn off anti-virus software..." and press " Edit policy setting"
In the window, select the item "Not configured" or "Disabled". If the “Enabled” item is active, the Defender will not work.

How to enable through the registry

Some Microsoft telemetry disable software can disable the built-in antivirus as well. A value is created in the registry with the DisableAntiSpyware parameter, which interferes with the correct operation of the service. Even when the Windows 10 Defender service is not running, you can find out how to enable it further.

To run the program, follow these steps:

Open a Command Prompt or PowerShell window as an administrator.

Copy the following command. For Defender to work, the /d value must be 0, or if you want to turn it off - 1.

reg add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 0

Defender on older versions of Windows

Defender is not only available for Windows 10, it was also present in previous versions. In Windows 7 and 8.1, it had such rich functionality as in the 10 version of the system. Next, consider the launch separately on each system.

Follow the next steps if you want to know how to turn on Windows 7 defender:

Open the Start window and select " Control Panel».

Choose small or large icons and go to Windows Defender.

Open Settings and go to the Admin tab. For Defender to be enabled, on the item "Use this program" should be checked.

Everything is quite simple, but do not forget about the presence of third-party antiviruses - they can interfere with or disable Defender.

If you want to know how to turn on Windows 8 defender, follow the next steps:

The main actions completely repeat the algorithm from the 7th version of the system, but there is a slight difference. Pass in Control Panel and open "Support Center"

Expand the Security tab and click on