I am getting the Error 691 when trying to VPN to a client using PPTP. The Client use the security setting CHAP and MS-CHAP v2. I had read the previous post "PPTP VPN not working with Windows 7. Error 691. Works fine with XP." but no solution were offered. The computer is Windows 7 Ultimate. I had tried ticked and unticked other boxes, stopped the firewall and still no luck. I ran the log (netsh ras set tr * en) and the zipped file can be found in https://cid-af62be706469eb40.office.live.com/self.aspx/.Documents/tracing.zip. Many thanks in advance.

I am getting the Error 691 when trying to VPN to a client using PPTP. The Client use the security setting CHAP and MS-CHAP v2. I had read the previous post "PPTP VPN not working with Windows 7. Error 691. Works fine with XP." but no solution were offered. The computer is Windows 7 Ultimate. I had tried ticked and unticked other boxes, stopped the firewall and still no luck. I ran the log (netsh ras set tr * en) and the zipped file can be found in https://cid-af62be706469eb40.office.live.com/self.aspx/.Documents/tracing.zip. Many thanks in advance. this came in from my client .... the server they are using is HP-UX gimc1 B.11.11 U 9000/800

Hi, Thanks for your posting. Error 691: Access denied because username and/or password is invalid on the domain. You can try these steps: 1) Verify the logon ID and password are correct. 2) Make sure the Include Windows logon domain check box is unchecked in the Options tab of the dial-up connection's Properties dialog box. 3) Make sure the dial-up connection's security option is correctly configured to use the Require secured password setting. 4) Delete all of the *.pwl files and reboot if you are using win9x. 5) Try another logon ID or create a new Logon ID because the profile may be damaged. These similar threads maybe helpful to you: http://forums.techarena.in/networking-security/1356907.htm http://www.howtonetworking.com/casestudy/vpnerror691.htm Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information. Furthermore, you can ask Windows Server for further help: http://social.technet.microsoft.com/Forums/en-US/category/windowsserver The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding. Regards, Leo HuangPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Thank you Leo :) a new login id and no domain did the trick!

Also try unlocking the account within active directory

Also try unlocking the account within active directory Hi I tried all the Suggestions quoted with no luck then did the following I changed my Normal Username to UserName@DomainName and it worked Good Luck

I was getting error 734 with windows 7 dial up networking. I finally found this article http://blogs.technet.com/b/rrasblog/archive/2007/04/08/troubleshooting-vista-vpn-problems.aspx that notes MS-CHAPv1 support has been removed from Vista and Win7. After using XP with only 1 authentication protocol enabled at a time to test dial-up, I found that my dial-up server was only allowing MS-CHAPv1 and hence Vista and Win7 cannot connect. When I try to use MS-CHAPv2 I get error 734. If I tried PAP or CHAP, I got error 691 since those were disabled in the dial-up server.