Error 651 when connecting to the internet byfly how to fix. What to do if your computer won't connect to the internet

Connection error 651- one of the most common Windows 7 and Windows 8 connection errors

(Error connecting to high-speed connection or Miniport WAN PPPoE with the message "Modem or other communication device reported an error")

In this manual, we will dwell on the methods of solving the problem "Connection error 651" in Windows. It doesn't matter what your provider is: Rostelecom, MTS, Dom.ru, TTK - the methods for solving error 651 are universal.

Error 651 is the first thing to try.

So you've got error 651. What should you look out for first?

• Check if all the cables are connected, if any cable has jumped out of the connector, if the cables are damaged (you never know, a friend's dog somehow chewed the cable :))
• Reboot your router / modem or other equipment in your apartment that affects the Internet (just unplug it, wait a while and plug it in)
• Try to re-create PPPoe connection

The fastest way to start the wizard for creating a new connection is to press Win + R on the keyboard, then enter rasphone.exe. Then create a new connection and enter the username and password provided by the provider.

Or you can go to: "Control Panel - Network and Sharing Center."

After that, we try to connect to the Internet.

• If error 651 appeared when you first connected to the Internet, double-check all the information you entered.
• Make sure your computer's network card is turned on
• It is possible that the problem lies in the antivirus or firewall. Check the settings or disable this software temporarily
• Call the provider and describe the current situation - there may be problems on his side.

So, we have described what to do with error 651 in the first place. If that didn't help you, let's move on to more complex methods;)

Multiple network cards on the computer or network card malfunctioning

It is possible that your computer has two network cards. In this case, the cause of error 651 may be problems with the second network card. To eliminate this option, we will disable the second NIC. To do this, go to "Control Panel - Network and Sharing Center - Changing Adapter Settings". Right-click on the required adapter and select "Disable". You can also disable and enable your main adapter (might help).

You may also have virtual adapters in this list that were installed by certain software. They can also be turned off.

Updating the drivers for the network card of your computer

Also, updating the drivers for the network card of your computer can help in fixing error 651. Drivers can be downloaded from the official website of the manufacturer of the motherboard of a computer or laptop, or reinstalled from the distribution kit (if you have one). You can also try uninstalling the current network card drivers and let Windows install the standard ones.

Problem with router or modem settings

If you are using a router or modem to connect via PPPoe, then it is worth checking the settings. To do this, you need to go to the administrative panel of your device and go to the Internet or Wan section there. Usually, it is enough to enter 192.168.0.1 or 192.168.1.1 in the address bar of the browser and enter the password. Sometimes the addresses can be different, often all the information for accessing the administrative panel of the router can be read on a sticker on the bottom of the router case. The router for this type of connection must be configured in the "Bridge" bridge mode, otherwise you will constantly receive the notorious error 651, since in the "Router" mode the connection to the Internet is established directly by the modem.

If you have an Adsl modem, be sure to check that the Link or Dsl indicator is on continuously (not blinking - it should be on steadily). Also check with the provider's support for the VPI and VCI channel parameters - if you entered incorrect parameters, you will also receive error 651.

Reset TCP / IP Settings

To resolve error 651, you can try resetting your TCP / IP settings. The easiest and fastest way to do this is to use the Microsoft Fix It utility.

Download the required file (depending on the OS), launch it - and the program will do everything for you. Then just restart your computer and try to connect to the Internet.

Changing TCP / IP Settings in Registry Editor

The following method applies to server versions of Windows, but, according to reviews, it can help in our case as well. We will edit the TCP / IP parameters using the Registry Editor.

For this:

1. Launch the registry editor. To do this, press Win + R on the keyboard and enter regedit

2. Open the registry section (folders on the left) at HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ Tcpip \ Parameters

3. Click in any free space on the right side of the registry editor and select the item "Create DWORD parameter (32 bits)". Name the parameter EnableRSS and set its value to 0.

4. In the same way, create the DisableTaskOffload parameter only with a value of 0.

Close the registry editor, reboot and try to connect again.

Last chance to get rid of error 651

If none of the above helps, try this. (on the principle of "what if")

1.Turn off your computer and all network equipment (routers, modems, switches). Disconnect from the network.

2. Disconnect the network cables from all devices, check their integrity and reconnect.

3. Turn on the computer and wait until it is fully loaded

4. Turn on the network equipment and wait until it is fully loaded.

Check to see if error 651 is gone.

If that doesn't work, it is possible that the 651 error is caused by malware on your computer. In this case, scan your computer with.

If a similar error does not appear on another computer, then the problem is either in the network card or in other OS problems. Accordingly, try another network card or reinstall the OS.

I tried to fit in the article as many solutions as possible to overcome error 651... Hope I helped you. If you have any questions - ask in the comments.

A similar network connection error numbered 651 for frequently installed versions of Windows 7, 8 and 10, the system describes it as an error of a network connection to a high-speed Miniport WAN PPPoE connection type, the text of the displayed message looks like this: “The modem or other communication device reported an error ".
This article provides detailed information on how to fix network error 651 for all kinds of Windows versions, and what type of provider you have does not play a significant role in this situation. This information is intended to help you resolve the issue you are experiencing without having to reinstall Windows again.

If, during the next connection to the Internet, error 651 appears on the screen, then you should try the following simple steps, after each of these steps, you must try to connect to the Internet again:

All these rather unpretentious and accessible steps to all beginners will help you eliminate such an error, and the connection will be restored again. This is how error 651 looks in windows 8.

Resetting TCP / IP Network Protocol Settings

There are several ways to reset the TCP / IP protocol settings for the demanded versions of Windows 7 and 8. The easiest way is to use this special utility called Microsoft Fix It, which can be downloaded from this official portal.
Upon completion of the launch of this utility, the program will spontaneously carry out the necessary reset of the Internet protocol, after which you just need to reboot the computer and try again to connect to the Internet.
Removing error 651 in some situations quickly helps to manually uncheck the TCP / IPv6 network protocol, which is in the PPPoE properties. To perform this action, you need to go to the list of necessary connections and open the available properties of the high-speed connection (The sequence of actions is as follows: Network and Sharing Center - change adapter parameters - right click on the connection - properties). Next, on the Network tab, you need to disable the checkbox from the Internet protocol of the required version 6.

Updating existing network card drivers

Updating drivers on a working network card of a computer can also be a way out of the existing connection difficulty. You just need to download them from the official website of the motherboard manufacturers or from a laptop and follow the simple steps to install it.
If you have two working network cards, then this can also cause error 651, then it is worth turning off the one that is practically not used.

Changing TCP / IP Protocol Settings in the Network Registry Editor

This method is generally convenient for use in server versions of Windows; I have not used it myself for custom versions. It consists in changing some parameters in the registry editor, to start which you must use the following functional combination "Win + R" and enter regedit yourself. Next, you must open the following section of the network registry (folders on the left) HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ Tcpip \ Parameters When using a single right-click on an empty area of ​​the parameter list, you need to select the desired item " Create DWORD Parameter (32 bit)».

Specify the name for the parameter as EnableRSS and set it to 0.
In a similar way, form the required parameter DisableTaskOffload with the required value 1.
After that, the computer must be restarted again and try to connect again.

Checking the technical hardware

If none of the above indicated the problem has been fixed, then it is worth moving on to more radical methods of troubleshooting in the form of reinstalling Windows.

1. First you need to disconnect your computer, router or modem.
2. Next, it is worth disconnecting all the cables, at the same time once again closely examine the integrity of the cable connections.
3. Next, you should connect your computer and wait for it to boot completely. If there is a network router on the cable line, then you need to turn it on, but this should be done only after the computer is booted up.

Well, then it's worth taking a closer look to see if a repeated error 651 occurs again.

Such an error may also be caused by the action of some unidentified malicious file on the computer, in which case it is necessary to check the health of your software using special means, for these technical purposes, in addition, it is recommended to use the following high-quality Hitman Pro programs and the well-known Malwarebytes Antimalware. Perhaps after eliminating the dangerous software, error 651 will no longer light up on your screen.

Error 651 usually occurs when connecting to the Internet via WAN miniport (PPPoE) in Windows 7 and 8. Its counterpart in Windows XP was error 678, and in Windows Vista - 815.

In any case, no matter how the error is called, its essence is the same - a connection error when starting a high-speed connection on Windows 7 and 8 to connect a computer to the Internet using the PPPoE protocol.

Let's take a look at a few of the reasons that error 651 might appear.

Checking the cables

First you need to check all network cables, connections and power to all network devices: modem, router, Wi-Fi adapters. Make sure that the cables are not broken, all devices are connected to the network. To eliminate the lack of contact, disconnect the network cables from the network card of the computer, router, modem and plug them back. If you are using PPPoE over a wireless connection, make sure you have Wi-Fi enabled on your laptop or computer.

Create a high-speed connection

You can also try to resolve error 651 by deleting and creating a new high-speed PPPoE connection. To do this, in the tray, right-click on the network icon and go to.

Then we go to the tab, there we select the high-speed connection on which the error 651 occurs, right-click on it and click "Delete".

To create a new connection in "Network Control Center ..." follow the link "Setting up a new connection or network".

Selecting an item "Internet connection" and click "Next".

In the next window, click on the item "High Speed ​​(with PPPoE)".

Introduce "Username" and "Password" and click "Connect".

Removing the 651 error can also be helped by unchecking the TCP / IPv6 protocol. To do this, go "Network and Sharing Center" – "Change adapter settings"... Then right-click on your high-speed connection and go to Properties. Go to the "Network" tab and uncheck the box Internet Protocol Version 6, click OK.

If error 651 still appears, move on.

Multiple network cards

If you have two network cards, then this can also cause error 651. For example, you have a home LAN or a cable from another provider connected to the second network card. Try disabling the second NIC or one that is not in use.

Blocking the connection

Antivirus or Windows firewall can also cause error 651. They can just block the PPPoE connection. Disable the security system temporarily.

Right-click on the antivirus icon in the tray and select the item Avast Screen Management, then choose any value. If you have another antivirus installed, find a similar function in it.

To turn off the firewall in Windows 7 read the following article.

Setting up a modem or router

If you have a modem, router or router installed, then you need to check its settings. In order to enter the settings of the router, enter http://192.168.1.1 or http://192.168.0.1 in the address bar of the browser, depending on the manufacturer. Next, a window will appear for entering a username and password. We fill in these fields, by default, you need to enter admin in each field. Next, we look to see if the username and password, the type of connection and the method of connecting to the Internet are the same. It is better to reset all settings to factory settings, and configure the equipment in accordance with the provider's recommendations. Then restart your device.

Also check that, say, on the router, all the necessary indicators are on. Which blinking green light is responsible for what, you can read in the instructions for the device.

Problems on the provider side

Internet connection problems can also be on the part of the provider. Call tech support and ask them to check the line. Perhaps they will provide some more useful recommendations. But they will definitely not solve the problems that have arisen with your home network, or teach you how to configure network devices.

Registry editor

Another method that can help resolve the error 651 problem is to change the TCP / IP settings in the Registry Editor. To do this, in the search bar of the "Start" menu, write "regedit" and press "Enter".

A registry window opens. In it, go to the following branches: HKEY_LOCAL_MACHINE / SYSTEM / CurrentControlSet / services / Tcpip / Parameters.

Then right-click on an empty space and select the "DWORD (32-bit)" parameter from the context menu.

Name the parameter "EnableRSS" and set its value to "0".

Likewise, create a parameter named "DisableTaskOffload" and set it to "1". Look, maybe there is already such a parameter, then just change the value to "1".

Close Registry Editor and restart your computer.

Perhaps one of the ways will help you solve the problem due to which the error 651 occurs when connecting to the Internet.

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Many Rostelecom clients face error 651 when trying to connect to the Internet using PPPoE. The reasons for its occurrence can be located both directly on the computer and on the equipment side (modem or router). If you have Windows XP or Windows Vista installed on your computer, then you will not receive error 651, but 678 or 815, respectively. In this article, we will look at the procedure for such a situation.

Causes of error 651 on Rostelecom

Quite often, when error 651 occurs, the user cannot get through to technical support and begins to reinstall the system itself, thinking that it will help. But it does not always help, since technical problems can be located not only on your computer. The main reasons for the error are:

• a malfunction of the operating system, which can be caused by the presence of viruses
• blocking the connection with the installed antivirus
• incorrect configuration of the router or modem
• damage to the Internet cable within the apartment
• problems on the provider side

The main task is to correctly identify the cause of the error, and this is already the work of the technical support service. But while you are dialing her, we will try to consider each point in more detail.

Error 651 due to improper operation of the router or modem

Each model of router or modem has a network address for entering the so-called admin panel. Most often, this address is 192.168.1.1 or 192.168.0.1 ... Enter it in the address bar of your browser and enter your username and password. In the settings, check the following tabs:

If these manipulations did not help, then disconnect the Rostelecom cable from the device and reconnect it, as it could corny "move away" from the connector. If this does not help, then check in which mode your device is operating. The most suitable mode is Bridge.

Error 651 due to antivirus

The version of the error due to the installed antivirus also takes place. You should not immediately panic and think that numerous viruses have settled on your computer, but it will not hurt to check your hard drive with another antivirus. To exclude this option, you need to temporarily disable your antivirus and try to connect to the Internet again. If everything went well, then you have found out what is the reason. If the mistake is repeated, then this is not the case.

Error 651 due to multiple network cards

If your system unit has several network cards installed, then this may be the cause of error 651. You need to open the list of equipment and disable one of them. After disconnecting, try connecting to the internet again. If the error persists, then try turning on the network card and turning off the other. Don't forget to connect your internet cable to it. If this did not help, then this is not the reason.

In rare cases, deleting the current connection settings and creating a new connection to the Internet by Rostelecom helps. To do this, go to the network management section and delete your existing connection. Click on the create a connection button and select the PPPoE protocol. Enter your username and password and save it. If these steps did not help you, then you will have to wait for a response from a technical support specialist and follow his recommendations.

Many users very often encounter the problem of lack of Internet connection. In many cases, the provider is to blame for the lack of Internet access to the computer, but user errors when working with the computer cannot be ruled out. In my practice, situations were very common: a user complains that the Internet has suddenly disappeared. After identifying the cause, it turned out that someone had pulled the network cable out of the computer. Therefore, many people do not even think to check such banal things. In today's article, we will talk about the connection failure error with error 651. If you encounter this problem, we will try to solve the problem on our own.

What is the cause of the failed connection with error 651?

The problem, connection failure with error 651, is faced by users. The problem often arises with the provider Rostelecom or others who use the connection of subscribers to the Internet via the PPPoE protocol. Users, not knowing how to deal with the problem, begin to reinstall the Windows operating system. But, after reinstalling, the error appears again. Since the solution to the problem was chosen incorrectly.

Let's consider a concrete example:

1. If you get connection error 651 on a computer with Windows 7, 8, 10, then this means that the network cable is not connected. Check if the network cable is securely connected to the network card. Unplug the network cable from the port of the network card and plug it in again, perhaps the contact just disappeared. If this does not help, then at least visually check the integrity of the cable.
2. Check if the network card is enabled in the system settings. To do this, go to the path "Start" - "Control Panel" - "Network and Sharing Center" - "Changes to adapter settings". We find the network connection we need, right-click and select "Enable".

These are two basic rules that you need to follow as soon as the Internet is gone.

The most common reasons for not being connected to the Internet.

Let's take a look at the most common reasons for not having the Internet:

• Blocking the connection with the installed anti-virus software. Quite often, the Internet connection is lost after installing or updating antivirus software. Since the goal of antiviruses is to protect your computer from all sorts of threats, sometimes they do not do it quite correctly, as a result of which they create certain problems for users. Therefore, in order to exclude this fact, it is necessary to stop for a while or completely
• The network connection is not turned on correctly. Quite often, there are cases when more than one network connection is installed on the computer. In most cases, additional virtual connections are created after installing various programs: VPN clients, virtual machines, and so on. The user, unknowingly, can turn on the wrong network connection himself, and the necessary one will be disabled. Therefore, check this item. I wrote how to enter the settings of network adapters in the previous paragraph;
• PPPoE client software failure. It often happens that a connection failure with error 651 appears after the Windows PPPoE client does not work correctly. In order to fix this problem, you need to delete the existing connection and create it again;
• Connecting the cable to another network card. It's also a fairly common case. If you have 2 network cards installed in your computer, then it is possible that you inserted the LAN cable into the wrong network card for which the connection was configured. To solve the problem, it will be enough to connect the cable to the correct network adapter;
• The problem is with the drivers. It is possible that the network card driver is to blame for the problems of the lack of the Internet. In order to check if there are any problems in the drivers go to "Start", right-click on "My Computer", and select the item "Management". A window will open, "Computer Management". You need to find the item "Device Manager", there we look for the line "Network adapters" and expand the drop-down menu. You will be presented with a list of network adapters. If you see that a driver is not installed on some adapter, then you need to install it. How to install a driver via Driver Pack,;
• The network cable is damaged. Often, the provider's cable is laid in the entrance or on the street, so if everything is in order at home, then check the condition of the cable outside your home. Also check if the connector or port on the computer or switch is damaged;
• Problems on the side of the provider. Often, Internet failures occur on the provider's equipment. Therefore, if the above tips to fix the connection problem did not help, then call the provider's technical support.

Error 651 occurs in different versions of Windows.

Different versions of operating systems, although they are similar in interface to each other, have their own characteristics. Therefore, a failure with connection error 651 can be solved in different ways.

In Windows 10, connection failure with error 651 can overtake you after installing or updating drivers on the Wi-Fi adapter, problems sometimes occur in earlier versions. In order to solve this problem, go to "Local Area Connection Properties" and uncheck all the boxes, except for "Internet Protocol Version 4 (TCP / IPv4)" in the item "Selected components are used by this connection". Then restart your computer and modem.

In this version of the operating system, our error often occurs after installing a 64-bit version of Windows. As a rule, in the 32-bit version of Windows 8 this error has not been encountered by users. Also, in order not to immediately sin on the bitness of the operating system, check all the points described above.

In the seven, there were often cases when in the device manager, in the parameters of network adapters, strange devices appeared that users did not install themselves. They appeared due to the work of viruses. Therefore, we remove all suspicious devices and restart the computer.

Eliminate the causes of error 651.

• We check the health of the network card. The network card can be damaged after a thunderstorm or due to problems with the computer. In order to eliminate the problem in the performance of the network card, you can put another network card in the PCI slot and configure the Internet connection. If the problem is resolved, the built-in network adapter is probably not working.
• Check the integrity of the network cable. As mentioned above. It is necessary to check the integrity of the network cable both in the house and in the entrance or on the street. Sometimes the unscrupulous employees of the provider use a cable intended for indoor use on the street, as a result of which it is damaged.
• Check if the drivers are installed correctly. If there are suspicious and unknown devices in the list of network adapters, then delete them.

Conclusion.

As you can see, there are a lot of reasons for which a connection failure with error 651 occurs, but you can find a solution to the lack of an Internet connection on your own. As a rule, it is enough to follow all the recommendations that I have outlined in this article and the Internet should appear on your computer again. Also, if you can't solve the connection problem at all, then first of all call the provider's technical support, and only after that contact the service centers for PC repair. Thus, you can not spend extra money on computer maintenance.