Some new users would come across the below-mentioned VPN error 812. What can we do with it? First, we need to know what is it and why does it appear on your Windows?
VPN error 812 is one of the most typical issues faced by VPN users when the connection is denied. This could typically happen if you did not make proper change to some policy on the RAS/VPN server. In the meantime, such common VPN connection (* authentication method) has been used by the VPN server to verify the username and password you saved. Then, if the items did not match, your computer will be unable to connect to the VPN server/IP by using the built-in VPN settings.
Would the VPN error 812 pop-up again? Commonly, it’s most likely to occur when:
- you do not make correct change to Server Network Policy and/or Client Connection Profile you previously saved on the Authentication Protocol.
- NPS does not re-new the settings of "Tunnel Type" Condition in Network Policy.
- you choose to update your XP Professional OS to Windows 7 Pro.
Then, if you want to successfully address this common VPN issue by yourself, scroll down and view the attached vid guide exactly:
How to fix the VPN error 812 manually? Here are some tips you can follow.
When the annoying alert appears again, telling “Verifying user name and password…”, please verify that you have entered the right log-in information. Re-try Windows’ VPN connection later. If the error message keeps showing up, you need to revert the Network Policy for “Tunnel Type”.
First, log on as Admin, then open “Control Panel”, head to “Internet Connection”, choose “VPN Connection”, go to “Properties” and then, the Security tab, you check the option "MS CHAP Version 2" manually. Save, restart and try out your VPN connection again.
Second, you can also select additional value to “Tunnel Type”, this time you choose “PPTP”.
Third, for site admins or server owners. you people need to wait till a convenient time to restart the VPN or NPS server. It may take some time to complete the reboot process.
Fourth, if there are any Anti-Virus program is running on the servers, please disable or turn off such program before you use your VPN service again.
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