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High speed internet connection error 651. Changing parameters in the registry

Connection error 651 in Windows 7 is displayed on the screen in the form of a small window.

The WAN port has its own miniport for each protocol. Connecting via WAN miniport PPPoE fails, then this message appears:

Error 651 when connecting to the Internet in Windows 10 looks a little different, but there is no fundamental difference. The same goes for Windows 8.

Error code 651 means there is a PPPoE network failure. The information is given: "The modem or other communication device reported an error." In English: "Error 651: The modem (or other connecting devices) has reported an error". Thus, the system signals to the user: "I can not connect to the Internet."

Let's consider how to fix the problem that has arisen.

Error 651 when connecting to the Internet of Rostelecom, Beeline, TTK, MTS, Dom.ru and other providers occurs if the PPPoE protocol is used. The causes of error 651 are different:

  • Damage to the cable or equipment;
  • Failure of settings;
  • Defects at the provider;
  • Viruses and antiviruses.

If problems are found on the PC, the first thing to do is turn off the computer and the router for one minute. Before resuming work, it is necessary to withstand this time so that the residual voltage goes away from the router. If it does not help, look for possible malfunctions step by step.

Physical damage

The error is caused by damage to equipment, namely:

  • Violation of the network card;
  • Router failure;
  • Damage to communication cables;
  • Malfunctioning connectors;

You need to start the test with the patch cords and connectors. Visually inspect them, if there is no damage, make a tight connection without distortions. There is a chance that error 651 will be resolved.

Malfunctions of the network card and minor malfunctions in the operation of devices cannot be determined independently. You have to be a specialist here. But trying to find other reasons for the error may be successful.

RASPPPOE client crash

In Windows, the system file is responsible for the PPPoE protocol. raspppoe.sys located in the directory C: \ Windows \ System32 \ Drivers... There is a possibility of damage to this file. Check:

  • A copy of the file on another computer or laptop. If this is not possible, download from the Internet;
  • Save the old file in a temporary directory, replace it with a copy;
  • If error 651 hasn't gone away, put the native file back in place and continue troubleshooting.

The presence of a second network card

If there are two cards and both are involved, this causes a connection conflict, leading to a connection failure with error 651. Disconnecting the cable from the second connection will do nothing. It is necessary to disconnect the second connection, for this:

  • Right-click on the network icon;

  • In the menu that opens, select "Network and Sharing Center";

  • Select the highlighted menu item;

  • A list of created connections appears;
  • Click on the desired one with the right mouse button;
  • In the pop-up context menu, select the first item;


If it does not help, disable and enable again the connection that caused the error. If you're unlucky again, look for other reasons, but don't touch the second connection yet.

Failed router or modem settings

When working through a router or ADSL modem, try connecting to them through another computer or through an alternative network card. If this is not possible, or all connections give an error, check the device settings. Any modem and router: TP-link, ASUS, Zyxel and others have a built-in WEB interface, with which you can access the settings. For this:

  • In the address bar of your browser, type 192.168.1.1. An authorization window should appear. If it doesn't pop up, turn the device over. On the bottom panel there is a sticker with the details required to enter the WEB-interface. Or find the details in the manual for the device;

  • Enter the found login and password into the authorization window;
  • In the opened window of the WEB-interface find the "Internet" or "WAN" tab;
  • Verify the connection data with the details received from the provider;
  • Correct the erroneous values ​​and reboot the device.

For ADSL modems, attention should be paid to the VPI and VCI parameters, incorrect values ​​of which can cause error 651 when connecting to the Internet. The modem may also not receive a signal on the telephone line. It is necessary to check the LED indicators on the device: they are on.

Checking antivirus and firewall

We need to check the system for viruses. To do this, update the anti-virus databases and run a full scan. If there are no viruses, it is possible that the antivirus itself or the firewall is causing the connection to fail with an error. Disable them temporarily.

If error 651 does not appear, contact the developers of the antivirus and find out the reasons, as well as a way to fix the problem without disconnecting. Developers should help configure the firewall as well, as these are interconnected programs.

Replacing values ​​in the registry for server operating systems

Manipulating the registry solves the issue for servers, but may help fix the error for non-server Windows systems as well. If the router or modem reports an error, you should try to work with the registry:

  • Run the regedit command by entering it in the search bar;
  • Expand the catalog by clicking the "plus signs" and sequentially selecting;

  • Call the context menu by clicking on the right in an empty space. Create DWORD (32-bit) value twice. First - DisableTaskOffload with a value of 1, then - EnableRSS with a value of 0.

  • To restart a computer. If this does not help, continue your search.

Problems with the provider

If the connection is via a router or modem and it is possible to connect to the network via Wi-Fi, try to connect from a tablet or smartphone. If everything went well, continue looking for the error in the computer. Otherwise, call your provider.

When your network connection is "naughty", there are four more common techniques that can help:

Updating the network card driver

Check the driver of the network card. To do this, enter the device manager through the control panel. Find a network adapter. If you find a yellow exclamation mark in front of it, you need to reinstall the driver.

If this action does not help, try to find the latest driver for the network card on the Internet. It is quite possible that the outdated one does not work correctly, especially if, when updating the Windows system, significant changes were made to it that "conflict" with the old driver.

Create a new high-speed connection

Deleting and re-creating the connection can correct possible errors. To do this:

  • Right click on the network icon and select;

  • Display the list of connections by clicking on the highlighted menu item;

  • Remove connection with error. To do this, right-click on it and select the appropriate item in the context menu that appears.

This is a common error that can be related to issues with your ISP or your system.
Let's consider the main ways to deal with the problem.

Resolving error 651 by rebooting.

1. Close all active windows and programs, save important documents, etc.

The thing is that a voltage failure or some kind of short glitch could affect the performance of the network card, it began to work incorrectly. A reboot will fix the problem.

Resolving error 651 by updating the network card drivers.

1. Start - right-click on the Computer shortcut - Properties - Device Manager.

2. Find "Network adapters" and if a yellow exclamation mark hangs next to your card on the left, update the driver on the network card through the context menu (with the right mouse button).

Error 651 is related to the network cable.

1. Check the network cable for physical damage. It is very important that the integrity of the cable is not compromised.

2. Unplug the network cable from the network card slot and plug it back in. It is quite possible that the contacts "moved away".

3. Restart your computer.

Resolving error 651 - creating a new Internet connection.

It often happens that the Internet connection is buggy, so it is worth trying to create a new one.

1. Right-click on the network icon in the lower right corner of the desktop - Network and Sharing Center.

2. Setting up a new connection or network - Internet connection - High speed (PPPoE). Enter the login from the provider, password, name your connection and remember the password.

Change the registry values ​​to fix error 651.

1. Click Start - type "regedit" - Enter. The Registry Editor will open.

2. Go to the address:

HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ Tcpip \ Parameters

3. Click the right mouse button in the window with the list of settings - New - DWORD (32 bits).

4. Name the created parameter "Enable RSS" and set parameter "0" to it.

5. In the same way, in the same branch, create a DWORD parameter (32 bits), name it "DisableTaskOffload" and assign the value "1".

6. Restart your computer.

Possible options:

Error 629 - The connection was interrupted by the remote computer.

For users who cannot figure out the reason for the appearance of error 629, we inform you that this is provider server error!

Most often, the error occurs when you try to connect to the ISP through a PPPoE connection, while your previous session was not closed.

To fix the error, just try the connection again in 2-3 minutes!

The PC is connected to the Internet using the PPPoE protocol. Almost every provider uses this protocol as the main one. That is why error 651 occurs quite often when connecting to the Internet on Windows 10. To fix this problem, you can contact the support service of your operator or use some methods.

Causes of Error 651 on Windows 10 PC

Failure to connect Windows 10 to the network with error 651 may occur due to:

  • Connections to another network (if performed via Wi-Fi);
  • Malfunction of the PPPoE client RASPPPOE;
  • Blocking firewall or antivirus connections;
  • The presence of a second network card;
  • Damage, absence and incorrect operation of network card drivers;
  • Damage to the network cable (not connected);
  • A technical problem on the part of the provider.

Also, connection error 651 may occur due to a malfunction of the router itself. Therefore, you need to check its settings.

Ways to solve error 651 on Windows 10 computer

There are several ways to fix error 651. However, before using them in practice, it is worth rebooting the PC and router, checking if the cable is connected, and reinstalling the network card drivers. If these standard manipulations do not help to return the connection, proceed to the following steps.

Method number 1. Disabling system protection

If you get error 651 on your PC, it is worth turning off your firewall and antivirus. After disabling the defenders, it is worth rebooting the system and checking the network connection. Sometimes an antivirus or firewall is blocking the PC's access to the network, causing error 651.

Method number 2. Disconnecting the second network card

Some users use two network cards at the same time. If you have the same situation, we recommend disabling one of them. To do this, just go to the "Device Manager", select the second network card and right-click on it. Next, select "Disable". Or we just turn it off physically.

Then we reboot the system. If the problem persists, the second NIC can be turned back on.

Method number 3. Create a high-speed PPPoE connection

To create a new high-speed PPPoE connection on a Windows 10 computer, do the following:

  • We press "Win + R" and enter "rasphone.exe".

  • A new window will open. We choose "High Speed" connection.

  • Next, the wizard for creating a new connection will start. We follow the instructions. Upon completion of the operation, restart the computer.

Method number 4. Resetting TCP / IP settings

You can delete and create a high speed connection, however, alternatively, you can reset the TCP / IP settings. This operation is much faster than creating PPPoE. To do this, you should do the following:

  • Run the command line with Administrator rights. Enter "netsh winsock reset".
  • Next, enter the following command "netsh int ip reset c: \ resetlog.txt".

  • We reboot the computer. The parameter will be corrected, since the settings have been reset.

Method number 5. Changing the parameters in the router settings

Most routers establish a PPPoE connection to the ISP. It is set automatically. However, if you encounter this error on your Windows 10 PC, it's worth checking your router settings. To do this, do the following:

  • Open your browser and enter 192.168.1.1 or 192.168.0.1.
  • Enter your username and password. This is often "admin".
  • In the menu on the left, select "Network", then "WAN" and indicate the type of PPPoE connection.

  • We save the settings and restart the PC.

Method number 6. Editing the registry

This method does not work on all assemblies of Windows 10, but it deserves attention.

  • We press "Win + R" and enter "regedit".

  • Find the section HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ Tcpip \ Parameters. Right-click on an empty space and select "Create DWORD Parameter (32-bit)". Give the parameter the name "EnableRSS" and the value "0".
  • Create one more parameter with the name "DisableTaskOffload", but with the value "1".

After that, you need to restart your computer and check the network connection.

For information on how to solve this problem, see the video:

When connecting to the Internet, errors can often occur, for example, one of these "Error 651 modem or other communication device reported an error." This can happen when you are about to connect via PPPoE (High Speed ​​Internet Connection). Now we will find out the reasons for its occurrence and how to deal with it.

Fixing error 651

There are many reasons for its appearance, as well as methods of elimination. Let's talk about them in more detail.

RASPPPOE service failure

This service is responsible for the high-speed connection. The remedy in this case is simple, you need to re-create the connection. To do this, you should know your username and password, which was issued by the provider.

  1. Should be opened. Then, in the menu on the left, the link "Change adapter settings", click on it with the left mouse button.

  2. A window will open where you need to select your active network connection, then right-click on it and select "Delete".

  3. The last step is to create a new connection. To do this, visit again "Network and Sharing Center"... Now we need the item "Setting up a new connection or network", and the next window that appears "Internet connection", and then "Further".

  4. Select, if prompted, "High Speed ​​Connection (PPPoE)".
  5. Next, you should specify the data provided by the provider: Login, password, connection name (optional).

    6. Incorrect network card drivers

    If the modem reported error 651, you need to check if the drivers are installed correctly on your network card. To do this, you need to open "Device Manager" by clicking on the Windows icon in the bottom bar and selecting "Device Manager"- for Windows 10. If the section "Network adapters", near the network card, there is an icon, which means you need to reinstall the driver. You can download it on the Internet by typing in the Yandex or Google search line the name of your network card, if the disk was attached, then you can install from it.

    In most cases, after this error 651, the modem or other communication device reported the error disappears.

    Router crash

    If you have an Internet connection via a router, then it may not work correctly and you need to restart it. To do this, it is enough to disconnect it from the network and turn it back on after 5 seconds.

    Firewall or firewall blocking the connection

    Your internet connection may be blocked by an antivirus installed on your computer or by Windows firewall. The problem is fixed as follows:

    1. You need to find a firewall function in your antivirus or something like that, and then disable it.
    2. Now you need to turn off the Windows firewall. To do this, you need to enter "Firewall" in the Windows search box and what you need will immediately appear. We open it and set everything up as on the kreens.

    After that, you can try to connect again, the problem should disappear.

    Broken cable

    Try to investigate your internet cable, there are times when a violation of its integrity leads to the appearance of error 651.

    Provider technical support

    If all else fails, there is only one option - contact the provider for help. You will be prompted what to do, and if anything, the wizard will come and set everything up and fix the failure.

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