Internet error 691 what to do. Internet connection errors in Windows OS

Good afternoon, dear readers and guests of the blog, we continue our study of network technologies based on the operating system Windows Server 2012 R2, today I want to add to our knowledge base regarding all kinds of errors connecting to a VPN server, and today you will find out the reasons for the appearance errors 691 and event code 13 in NPS magazine. Let's see how this whole matter is solved and diagnosed.

What does error 691 mean?

And so there are users who have the Windows 8.1 or 10 operating system installed on the client machine; when connecting to the VPN server, the user receives this message:

Error 691: B remote connection refused because the specified username/password combination could not be recognized or the selected authentication protocol is not allowed on the remote access server

Reasons for the error

Let's look at the main reasons for this problem:

• If we are talking about connecting to an Internet provider, so that through this connection, then make sure that you do not have an account for the position
• Correctness of the entered data
• Not correct settings in VPN connection
• Blocking by an antivirus product or on your firewall (router)
• Server side errors

Let's now look at everything in more detail for each of the reasons.

How to fix error 691

• And so, if the connection goes to the provider, then you need to check the balance, there are several options, either some kind of personal account (for example, look from a mobile phone), or call technical support and clarify
• If there are no blocks on your personal account, then the most common mistake is incorrect credentials or the wrong connection method was selected, I’ll tell you in more detail here.

If you created a VPN connection a long time ago, this does not mean that you do not need to check this item, for the sole reason that the settings on the server side may have changed, and the fact that you may have missed this news is your problem. Go to the official website or call technical support and clarify all the data:

1. Server address
2. Connection protocol
3. Authentication method
4. Ports

Then go to the properties of your network connection, to do this, press Win+r and in the Run window write ncpa.cpl

As a result, the window “Control Panel\All Control Panel Items\Network and Sharing Center” will open. shared access"Here you can detect all your VPN connections. Go to the item "Change adapter settings"

In the end, here you need to find your VPN connection.

Make sure you are using the correct connection protocol, we have already caught the 806 error because of it. Go to the connection properties, right-click and go to the “General” tab and check that the server address is correct.

Very often I have seen connection failure with error 691 in windows 7 precisely because of the wrong protocol type in the Security tab and make sure the authentication method is correct.

We bring all settings into proper form, and in accordance with the requirements of the provider or service provider. Save and try to connect.

• Now let's look at errors from the VPN server itself. I had exactly this case. I'll describe the scheme. There is a virtual machine with microtik and it works as a gateway and VPN server, which, for authentication, accesses the radius server which has a database Active Directory, by which he sees who came to him. And it was precisely in this connection that there were problems; on the server I saw the following error;

The RADIUS message was received from an invalid RADIUS client IP address 10.152.1.100. With event code 13

Essentially, the NPS server rejected the user when trying to connect to it and gave him error 691. There are several reasons for this, and almost all of them were on Mikrotik’s side. What you need to check on it:

1. Shared secret key
2. Connection protocol
3. Ports

On the NPS server side and radius settings, check that NPS is registered in Active Directory, if not, do so.

A window will pop up confirming your operation.

Also on the Network Policy Server, make sure that in the radius properties of the connection you can check the dns name or IP address, VPN servers

You should not have the error “This host is unknown” when checking, which is why you get the error “The RADIUS message was received from an invalid client IP address”

• And also make sure that your ports are not blocked, both on the server side and on the client side, an example would be routers that cut GRE packets or Kaspersky anti-virus, if you have NPS installed, then its ports can be viewed in the server properties. For me it is 1812, 1645 are the authentication ports, 1813, 1646 are the credentials ports.

While connecting to the Internet, many users encounter an error number 691. What does it mean and what should a Windows 7 and 10 client do to make it disappear?

What does error 691 mean and why does it occur?

The window with error number 691 always contains its description. The system explains that it is denying the user an Internet connection because the specified login and password could not be recognized, or because the selected authentication protocol is not allowed on the server. Simply put, the Windows client entered incorrect data at the authorization stage. This is the most common reason for this error to occur.

In the window with error message 691, the system notifies that it cannot provide access to the Internet due to an incorrectly entered login and password.

What other explanations are there?

1. The modem or router is not working properly.
2. The specified IP address for establishing a VPN connection is incorrect.
3. Connection to another network under the current account, which was previously made by the user.
4. Problems with the network on the part of the provider. The failure may not happen on the user's side. In this case, you need to wait until the provider solves the problem itself.
5. Blocking the connection with Windows Defender Firewall.
6. Lack of funds in the Internet user's account. This reason is not so common, since often in this case, when loading a site in the browser, a message appears from the provider about the need to top up your account in order to further use its services.

How to solve error 691 on Windows 7 and Windows 10

Since there are many reasons why error number 691 appears, there are also different methods for getting rid of it. Let's look at each of them in detail.

Checking the correctness of the login and password

Often, error 691 appears when a network client specifies incorrect login data (incorrect login and password). It doesn’t matter if you logged in for the first time account or not. Perhaps the data got lost for some reason. In this case, you need to re-enter them. The login and password can be found in the agreement with your provider.

When entering a password, be sure to check that the CapsLock button on the keyboard is disabled. In addition, you need to pay attention to the case: the system distinguishes between lowercase and capital letters. Also, do not put a space between characters and make sure that the desired input language is installed.

When re-entering your login and password, carefully watch the case

Anyone can help you enter everything correctly. text editor, for example, "Notepad". Type the characters into it, and then simply copy and paste the combinations into the corresponding two fields to enter. This advice is especially relevant for clients of the Rostelecom provider, which comes up with complex passwords for users.

Balance check

Your agreement with the provider must contain login information " Personal account"on his official website. If you don't have internet, you can still open it successfully. Log in using your username and password and check your current balance. If it is negative, we replenish it in any convenient way. After this, Internet access will resume. If you are unable to log into your “Personal Account”, you can call your provider and find out the current amount of money in your account by calling the number by which you are replenishing it.

Rebooting the equipment

Any device can malfunction from time to time. A modem or router is no exception to this rule. Try rebooting it. To do this, turn it off for 30 – 60 seconds using the power button, which is usually located on the back of the router, and then turn it back on and wait until it boots up completely. Try connecting to the network again.

Checking the Windows Firewall

The standard Windows Defender Firewall application can be the culprit for error 691. In particular, a failure when connecting to the Internet occurs if the specified service is suddenly disabled for one reason or another. In this case, you need to reactivate it and configure it to start automatically:

The cause of error 691 may also be a blocked connection " Windows Firewall" To verify that this is the problem, disable it for a while:

1. In the "Control Panel", which can be found through " Windows Search"(a magnifying glass icon), click on the item "Network and Sharing Center".

   Open the "Network and Sharing Center" section

2. In the lower left corner, find the link for Windows Defender and click on it.
3. We turn our attention again to the left side of the window, where we look for the item “Turn Windows Defender Firewall on or off.”

   Click on "Turn Windows Defender Firewall on or off"

4. Depending on what type of network you are using (private or public), select the block in which you will disable the option to ensure security.

   Disable Windows Defender using the option for private or public network

5. Check the box next to the disable option. Click on OK and try to connect to the problematic network.

Video: How to disable Windows Defender

Temporarily disabling the antivirus

Windows Defender is not the only one that can block network connections. The “culprit” of error 691 can also be an antivirus that tries to protect your computer from malware. He can consider the files responsible for connecting to the network to be viral and put them in the so-called quarantine, that is, isolate them from all other documents. If this is the reason, you must also disable the antivirus for a while and try to gain access to the network. The error 691 window may no longer appear. After this, do not forget to turn on the anti-virus software again and add processes related to connecting to the World Wide Web to the exception.

Let's look at the shutdown using the Avast program as an example:

Video: how to temporarily deactivate Avast

Update network card drivers

The cause of error 691 can be not only an incorrect login or password, but also outdated drivers network card. They need to be updated. If you have desktop computer, you need to download the update on the official website of your motherboard. If you have a laptop, go to its manufacturer's resource.

Let's look at downloading and installing a network card driver update using an Asus laptop as an example:

1. We will load the drivers here. Go to it and enter your laptop model.

   Write the model name of your laptop

2. Find the desired model in the list and click on the “Support” link with the left button.

   Select your model from the list and click on “Support”

3. Now go to the first tab “Drivers and Utilities”.

   In the “Drivers and Utilities” tab, select your OS

4. Select your operating system from the drop-down menu.
5. In the list of available drivers we find LAN. This is the required network card driver. Click on “Download”.

   Find the LAN network card driver

6. Launch the downloaded archive and double-click the file called setup.exe.

   Open the setup file in the downloaded archive

7. In the InstallShiled Wizard window, select the second option “Fix” to reinstall all program components. Click on “Next”.

   Select the “Fix” option and click on “Next”

8. Wait while the installation wizard fixes any problems.

   Please wait until problems are resolved

9. After this, the new components will be installed.
10. As a result, a message indicating the completion of the operation will appear in the window. Here we click on the “Done” button.

    Click on "Done" to close the window

11. We reboot the computer for all changes to take effect and try to connect to our network again.

An easier way to install the update is through the standard Windows window called "Device Manager". How to open it and what to do in it?

1. We find the “Device Manager” service through “Search” - a panel that is launched through the “magnifying glass” icon to the right of the “Start” button.
2. Enter the appropriate query and open the window with one click on the item in the search results.

   Find the Device Manager service through Windows Search.

3. In a large list we look for the object “ Network adapters" Open it by double-clicking with the left mouse button.
4. Select one of the drivers with the right button and click on “Update driver”. You do not have to download the update for the Bluetooth item, as well as Wireless, if you do not use Wi-Fi, but cable Internet.

   Click on “Update Driver”

5. In the new window, click on “ Automatic search updated drivers" or by "Search for drivers on this computer" if you have already downloaded the required update for the network card using the previous method. After this, you will be prompted to specify the path to the update file. Then the installation will begin.

   Select one of the links provided

6. If you selected the first link, wait while the system searches the network for available updates.
7. If the update is not found, the system will notify you that new drivers have been installed on the computer.

   The system will inform you if the driver does not need updates

8. If there are updates, the OS itself will download and install them.
9. Repeat the procedure for all remaining drivers in the list of the “Network adapters” item.

Video: how to update a network card on a Lenovo laptop

Create a new connection

If all the previous methods do not work, try creating a new connection. Use the following instructions for this:

1. First, launch Control Panel. To do this, hold down the Win + R combination on the keyboard and type the control code in the window. Execute the command using the OK button or the Enter key.

   Write the control command and click OK

2. Go to the “Network and Internet” section.

   Depending on the device used to connect, select high-speed or dial-up type

3. We print the password and login for the network, which are specified in your agreement with the provider. If you want to see the characters you enter in the Password field, check the box to the left of “Display characters you enter.” You can also enable password saving.
4. Also check the box below if you want to allow other users of this PC to use your connection.
5. Click on “Connect”. We check if there is access to the Internet.

Video: How to easily create a new connection in Windows 7 and 10

Call the provider's support service

If none of these methods solve the problem or you are unable to use them, call your provider's support line and explain the problem you are experiencing. Be sure to report the error number to the operator. If the problem is on the provider's side, you will be notified about it immediately. You also have the right to find out how long the problem will be fixed. If it is not the provider’s fault, the specialist will clearly explain to you how to correct the situation and gain access to the Internet again.

Error 691 most often occurs due to the fact that the Windows client entered incorrect login information (login or username and password). You need to re-write them, but more carefully: you need to pay attention to the case, as well as the input language and CapsLock key. You can also solve the problem by temporarily disabling Windows Defender and the antivirus installed on your PC. If this does not help, update your network card drivers and create a new connection.

The accessibility of the Internet directly relates to the growing popularity of various electronic devices. Therefore, there is no greater disappointment when a person has spent a considerable amount of money on purchasing the necessary equipment, and the message “error 691 when connecting to the Internet” appears before his eyes.

By the way, not a single user is immune from such a nuisance, no matter what provider he chooses. Which confirms large number similar requests for help: error 691 Beeline, Rostelecom and so on.

Don’t get nervous ahead of time, since very often the reason that causes a connection failure can be treated quite easily.

Treatment methods

It may not be strange, but the first thing to do in such a situation is to check the account status. Especially often, such a surprise occurs among people who use monthly tariffs and simply forget about the date when they should make the next replenishment. Result - code 691 when connecting to Internet Windows 7 or any other version of the operating system from the most famous manufacturer of such software.

The next reason why an unpleasant message appears when connecting to the Internet in Windows 8, 7, 10, etc. is that you entered personal data incorrectly. That is, login and password. Again, the solution may lie in setting the correct keyboard layout. For example, a person’s login is written in Russian letters, but should be written in English.

Problems when trying to connect via PPPoE may be caused by incorrect VPN server settings. What does it mean that an error occurs already at the first stage of the process being launched.

The fix is ​​this:

1. Go to menu " Network connections».
2. Find the created connection and open the submenu by right-clicking on the mouse.
3. Go to the “Properties” folder.
4. Double-check the correctness of all data entered there.

The last option for such error 691 to occur may be that the firewall is not working for some reason. Therefore, before you try to go out into the open spaces global web, it is recommended to check the functionality of this application, which is also very easy to do:

1. Go to the control panel, from where you go to the “Services” menu.
2. You need to find the application and launch its settings.
3. Find the “status” line and enable this important program.
4. Try to go online.

Usually these options are quite enough to cope with error 691, a seemingly complex and irreparable situation.

Error 691 occurs in all operating systems Windows family and is primarily related to Internet connection settings. A similar error can occur either immediately during the first attempt to connect after making the settings, or later, when a successful connection with these network settings has already been made several times. There are several reasons that can trigger error 691, they all have a different solution and therefore we recommend reading this material in its entirety before proceeding with the fix.

Reasons for error 691

The most common reason for error 691 when connecting to the Internet is a simple typo when entering your username and password. This is what the service window with a description of the error that appears on the display reports.

However, the cause of problems can be not only the login and password, but also incorrect parameters specified for the connection if you are using a VPN. An error in spelling the VPN server name, an incorrect server IP address, or an incorrect password to access the server. All this can also provoke error 691.

There are times when error 691 appears spontaneously, without changing Internet settings. In this case, you should pay attention to the programs that you have installed on the system recently. Probably, one of them has access to the system settings and changed them, violating the connection settings and security of the network connection.

How to fix error 691 on Windows

1. The first step is to delete the created connection and try to create it again, being especially careful when entering your login and password. Check the correct keyboard layout, activation Caps Lock and the correctness of entering lowercase and capital letters.

1. Open the Network Connections system window, which can be found in the Start menu. Select the connection you use by default and right-click on it. Select the Properties option. In the window that opens, check that you have entered the IP address given to you by your provider correctly, and in the VPN properties, be sure to uncheck the Include login domain in Windows option.

After making the settings, it is advisable to restart the computer and try connecting again. Error 691 should not bother you anymore.

The system may display error 691 when connecting to the Internet, no matter what provider you use: Beeline, byfly, TTK, Ufanet, Skylink, Dom Ru, Tattelecom, beeline, Skylink, and so on.

Do not confuse it with - these are different failures. If it occurs, the first thing to do is diagnose Windows 7, Windows or Windows 8.1 (click on the link to get detailed instructions).

If the problem is solved, great, but if the Internet does not connect and error code 691 continues, then read below to resolve this failure.

What does error 691 mean?

Error 691 appears when the Internet does not connect, but in contrast to 651, it indicates that all settings are correct, only the password or username is incorrect.

Also, such a surprise awaits you if your account runs out of money or the VPN is incorrect.

When connecting to a pppoe network on a computer or laptop, the modem may also display error 691.

How to fix error 691

If you get error 691 when connecting to the Internet, the first thing you need to do is check whether it is paid for.

The second step is to check the username and password. At the same time, be careful not to accidentally enter an extra space - this is all taken into account.

Also, when entering the password, look at whether the “Caps Lock” key is pressed. It prints large letters, you may not see which ones are found, and the password reacts to this parameter.

The third step is to look at the VPN address. You can see it if you open the control panel and go to the “network connections” section.

There, right-click on the “ELNET_INTERNET” line and click on the “properties” line, then check the IP address on the “Destination IP address” tab.

The fourth step is to check if the firewall is blocking the Internet. In such cases, error 691 also appears. Try simply disabling it.

What to do if nothing helps. Sometimes error 691 can occur when trying to make another connection when the Internet is already running

Then you need to turn off the Internet. The session may also simply freeze, then restart your computer.

The last option to fix error 691 is to contact your provider. He knows a lot, and telephone numbers to operators are usually free.

Of course, it is impossible to exclude individual “accidents” not described above. I haven’t come across other sources, but if you describe them a little in the comments, we’ll solve the problem quickly. Good luck.