Error 691 when connecting through VPN on Windows 8 or Windows 10

By | January 22, 2013

After upgrading to Windows 8, I ran into an issue where I couldn’t VPN into my old Windows Server 2003 machine anymore. I kept getting this error:

Error: 691: The remote connection was denied because the user name and password combination you provided is not recognized, or the selected authentication protocol you selected is not permitted on the remote access server.

I know that my username and password is correct so I figured it must be something else. Turns out, it’s an easy fix.

  1. Open your VPN connections properties.
  2. Go to the security tab
  3. Check “Allow these protocols” and make sure “Microsoft CHAP Version 2” is checked

    Fixing VPN Error 691 in Windows 8

    Select the radio button for “Allow these protocols”

  4. That’s it

I’m guess this is a bug of some sort. Once you select one of the two radio buttons, you can’t deselect them which leads me to believe that it is a bug. Hopefully this will be fixed in an upcoming Windows update.

14 thoughts on “Error 691 when connecting through VPN on Windows 8 or Windows 10

  1. Cintia

    Thank you very much. I was getting crazy with this VPN.

  2. Rajendra

    Yes ,, I was also in trouble for this issue but ur help work for me amazingly !!! Thanks a ton man !!!

  3. Pingback: How To Fix Vpn Error 691 Errors in Windows

  4. Kim Williams

    I know this post was almost a year ago, but thanks for the easy solution. I have been trying to figure out why my VPN client all of a sudden stop connecting. Thanks!

  5. Cheri

    Thanks so much! I’m excited it worked on my new laptop with Windows 8.1! Had tried a million things…

  6. BryanW22

    This resolve my problem,
    i cannot connect with ActiVPN !!

    Thanks a lot !!!

  7. Axefield

    This was precisely the problem, many thanks. Weird though that these things do not work right away. If you are a standard user you don’t want to configure these things. You just want it to work.

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