I have two servers out in an OU that are not taking scheduled tasks as specified in the GPO. The same GPO applies correctly to other machines in the same OU with the same permissions, so I don't believe it to be a permissions or routing issue.
The only error I can find is when I pull a report query of the applied settings, under the "Scheduled Tasks" category - it says "An unknown error occurred while data was gathered for this extension. Details: Invalid class." Anyone seen this before or know how to further investigate?
AD server pushing the policy is 2008 R2, client servers are 2008 R2 (but policy is applying correctly to 2012 R2 machines).
EDIT for future readers: misbehaving boxes were NOT R2 machines, hence the problem.
Thanks in advance...