Losing connection to PDC / Access denied error to redirected folders

Hi All

We've got redirected folders and roaming profile in place. Everything used to be working fine for a couple of months, but since a few weeks I'm more and more getting a
 access denied error when syncronising offline files. This happens during the day and the redirected folders are not accessible anymore. I've checked network connection and user permissions. All good.
Redirected folders: My Documents and Desktop.
Most users only recognise this when they want to save files obviously. I'm always trying a syncronication first but most of the time this doesn't help.
Sometimes a reboot / registerDNS / reboot will make it work again.

Is the profile getting corrupt? Is there anything wrong with my DC?

Thanks in advance
Daniel

Dan-ITAsked:
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Dan-ITAuthor Commented:
Just a thought:

Just noticed that there is no Time server configured and the client ws is about 5 minutes ahead of the PDC. Would that matter? Do you know the threshold what it could be?
Some devices stop working by 5 minutes as far as I know.
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sfossupportCommented:
Kerberos has a time threshold of 5 minutes so this could be very well your problem.
Here are some details.

http://technet.microsoft.com/en-us/library/cc779145%28WS.10%29.aspx

You should either setup an ntp on the pdc or point the pdc to an ntp server
Here is some info on setting up the time server

http://technet.microsoft.com/en-us/library/cc784929%28WS.10%29.aspx
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Dan-ITAuthor Commented:
Sorry for the late reply.
Turned out that it was the Time Server.
Set the timeserver on Forest Level pushing down to DCs, DCs pushing down to clients and everything works great. Will monitor everything and update if necessary.

Thanks
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