From forum report, There seems to be large number of enterprise users encounters this issue.
You have a Windows 2008 DC. You create a Wired network policy using Windows 7 GPMC, and the “validate server certificate” option is unchecked. After the GPO is applied, the Windows XP, Vista and Server 2008 start having authentication failure. If you open the policy from a Windows Vista GPMC, and you will find the “validate server certificate” option is checked.
To solve this problem temporarily, you should follow one of the workarounds below:
Step to repro:
Edit: We have released a hotfix to resolve this issue. Please apply the following hotfix if you encounter the same issue:
I have this exact issue, but when I try and create the policy on a Server 2008 machine it gives me an access denied error when trying to create a new 802.1x policy. Not sure what to do now.
Please apply the following hotfix if you encounter the same issue:
The hotfix states that it is for Vista and 2008 only. What about XP because I am still running into problems with this OS.
What I did to get this working was to create the policy on a Windows 7 machine and then modify it on the 2008 (non R2) machine. Creating the policy on the 2008 box first gave me a result that the Windows 7 machines(as well as XP) could not get that policy. Even though I created it on the Windows 7 group manager and unchecked validate, I still had to log into the 2008 box where it was not checked.
Samuel, thanks for sharing.
my server certificate has gone invalid and i am unable to access my mail an error of security error is served when i try to log on my email what to do?