Solved: VPN Error 691 on Windows 10, 8.1 and 7


Okay, so if you’re utilizing a VPN connection, then you might be able to browse the net securely. But, what’s going to you do once you get an error whereas utilizing a VPN. Well, usually VPN errors are associated to connection settings. However, particularly, if you’re dealing with VPN Error 691 on Windows 10 which is a dial-up error, then that is associated to the way in which the community layer of the OSI mannequin works. The community layer might be damaged on this case.

Getting error: Error 691: The distant connection was denied as a result of the person identify and password mixture you offered isn’t acknowledged, or the chosen authentication protocol isn’t permitted on the distant entry server.

Most of the time error 691 happens when the settings are incorrect for one of many units and the authenticity of the connection can’t be instantly decided. The frequent causes behind this are incorrect username or password or if you’re utilizing a public VPN, then your entry may need been revoked. Sometimes resulting from mismatched safety protocols, this downside can happen. Now, if you’re dealing with this error, then you possibly can repair this error by utilizing just a few simple strategies.

How to Fix VPN Error 691

If you might be fighting VPN error 691 and don’t know methods to repair it on Windows 10 laptop, then you want to observe these strategies –

This error 6591 could also be brought on by your PC or modem concern, and there could also be one thing incorrect when connecting. So you possibly can restart your modem and PC/laptop computer to regain the connection.

Allow Microsoft CHAP Version 2

This is the error the place you want to change a number of the VPN properties to achieve entry as soon as once more. When you might be altering the authentication stage and encryption settings of your VPN server, then this would possibly aid you with the receiving finish of the VPN connection. The downside right here would possibly with the sending of the connection that’s why you would possibly want to vary the protocol for VPN to attach with the VPN in a different way.

  • Press Windows + R keyboard quick lower key to open Run,
  • Type ncpa.cpl and click on alright to open community connections window,
  • Now, you need to right-click on your VPN connection and choose the Properties.
  • Then, go to the safety tab and test two settings  – Allow these Protocols and Microsoft CHAP Version 2.

Microsoft CHAP Version 2

Uncheck Windows logon area

If you need to login to VPN Client utilizing the area the place each area on the server is totally different or the server is ready as much as authenticate by way of a username and password, then you might be sure to see this error. But, you possibly can simply repair it by utilizing the next steps –

  1. You have to press the Windows key and R key collectively on your keyboard and kind ncpa.cpl and press Ok.
  2. Next, you want to right-click on your VPN connection and choose the Properties.
  3. Now, you need to go to the Options tab and uncheck the Include Windows Logon Domain. And, this would possibly repair the error for you.

Change LANMAN Parameters

When the person has a more recent working system and making an attempt to attach VPN into an older server, then the system encryption gained’t match up and this might set off our error of the dialogue. You can patch up this error by utilizing these steps –

Note: As Home Editions for Windows don’t have group coverage options, the next steps are relevant for professional and enterprise editors of Windows 10, 8.1, and 7 solely.

  • Press Windows + R kind ‘gpedit.msc’ and click on ‘OK’; to open Local Group Policy Editor
  • In the left pane Expand observe this path – Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options
  • Here In the best pane find and double click on ‘Network security: LAN Manager authentication level
  • Click ‘Local Security Settings’ tab and choose (*7*) from the drop-down menu then ‘OK’ and ‘Apply
  • Now, double-click ‘Network Security: Minimum Session Security for NTLM SSP
  • Here Disable ‘Require 128-bit encryption’ and allow ‘Require NTLMv2 session security’ choice.
  • Then click on ‘Apply’ and ‘OK’ and save these adjustments
  • Now, restart your PC to use these adjustments and test if the problem is fastened.

Recheck Your Password and Username

In the frequent state of affairs, the issue of error 691 happens when there’s some downside with the password and username of your VPN server. You want to make sure that your password and username are corrected entered on your Windows 10 laptop. For this, test whether or not the CAPS LOCK choice is turned on your laptop otherwise you haven’t pressed the incorrect keys by mistake. Moreover, make certain to make use of your electronic mail deal with as your username so that you simply gained’t ever neglect it.

Update Network drivers

The subsequent factor we’re going to strive is updating your community drivers. Here’s how to try this:

  1. Go to Search, kind devicemngr, and open the Device Manager.
  2. Expand Network adapters, and discover your router.
  3. Right-click your router and go to Update driver.
  4. Follow additional on-screen directions and end putting in drivers.
  5. Restart your laptop.

Delete and add your VPN connection

Here is one other easy answer that probebly helps to repair this error.

  1. Press Windows Key + I keyboard shortcut to open the Settings app.
  2. Click on Network & Internet part then navigate to the VPN.
  3. In the VPN part, you must see all of your obtainable VPN connections.
  4. Select the connection you need to take away and click on the Remove button.
  5. Now you want to add a brand new VPN connection. To do this, click on Add a VPN connection button
  6. After doing that, enter the required data to setup your VPN connection.
  7. After creating a brand new VPN connection, strive to hook up with it and test if the problem nonetheless persists.

If you need to keep away from VPN Error 691 on Windows 10 or another sort of error and need to securely and safely entry your VPN server, then you want to get the companies from a extremely dependable VPN server. There are loads of totally different trusted and extremely respected VPN servers can be found available in the market like CyberGhost VPN, Nordvpn, ExpressVPN, and many extra. With the large names comes good buyer assist and loads of different options that may defend you from any sort of VPN error.

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