Problem with Group Policy Settings not applying or Group Membership not applying properly.

I’ve seen this happen recently at my job and it actually happened to me directly.  Being in Support I have to be apart of many groups.  While I was setting up a new machine I noticed none of the Group Policies were applying and certain drives I normally access were now throwing a ‘Access Denied’ error.  After discussing it with some colleagues we determined I was a member of too many groups.  Increasing the default Token Size to 48000 was recommended.  This is a very simple fix and we decided to apply it to our default machine policy for our Domain.

Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\Kerberos\Parameters

Entry: MaxTokenSize
Data type: REG_DWORD
Value: 48000

If you are having symptoms where your group policy is not applying or a group membership isn’t taking effect try this out.

To learn more about this check out this Microsoft Article: http://support.microsoft.com/kb/327825