Map Drive Problems / GPO not accessible
Last week as part of a server re-role we ran dcpromo on one of 2 backup domain controllers (server 2003) to revert the server back to a member server. Before we started as advised we removed any server roles which might have caused us problems such as DNS and the process seemed to complete with no errors shown. Additionally we also removed the way we use to provide map drives to staff and students which use to be via a logon script and is now done by a new server running 2008 R2 and the map drives option in two GPO's one for staff and the other for students.
Today we have experienced a handful of cases both for staff and students whereby the users are unable to access the mapped drives such as staff and/or student shared areas. This seemed rather strange in that the majority of staff or students are not affected, yet!!!. My work around has been to provide a desktop shortcut as a temporary basis which the affected users can access without problems. Having looked at the event logs on the machines affected the common denominater seems to be a problem with the GPO not being applied and an error event log of 1058 with Userenv, the text then refers to windows not being able to access the file gpt.ini for the GPO as it cannot access the sysvol folder for this GPO.
Now this is where some help would be much appreciated as since we have a DC and now 2 back up DC's, one being the new server I'm confused why the GPO is not accessible on at least one of these servers who are not showing any replication errors. How can I tell if the servers are replicating correctly and how do you tell on the client machine which server (sysvol folder) it is accessing to apply the GPO's ?
Any advice would be welcome as I expect this is likely to get worse over the next few days.