We have a strange problem with a remote network running on a Read Only Domain Controller; sometimes, when a user logs in their roaming profile fails to load, causing them to fall back to a local profile (and preventing access to shares on the network). The error from Event Viewer shows the following:
Error ID 1521
The permissions to the profiles must be correct as users often manage to log in completely normally. I have yet to find any consistent pattern to the problem.
The client PCs are all running Windows 7 Pro and the RODC is running Windows 2008 R2. We have three DCs on the main network, 2 x Win 2003, 1 x Win 2008 R2
Can anyone help?