Thursday, 24 April 2008

Offline Files warning won't suppress

A client PC on an SBS2003 network kept giving a warning about a PST file not syncing at logout. It was an archive copy of an email account stored in My Documents that was located on the server. At the end of every day the Offline Files would sync and stick with the error, annoying the client who was keen to get out of the door at 4pm ... wish I had those hours ;-)

There's an MS document, KB811660 that talks about suppressing the warning for particular file types and locations. Its a bit obscure but the key point is to add this to the registry to skip warnings for Outlook PST files.

HKLM\Software\Policies\Microsoft\Windows\NetCache\ExclusionErrorSuppressionList \\\\*\\*\\*\\*.PST = 0x0000000 (REG_DWORD)

Unfortunately that didn't clear the error, even after the obligatory reboot. The trick to get it to take effect was to reset the Offline Files cache too. Go into My Documents > Tools > Folder Options > Offline Files and use Ctrl-Shift with Delete All Files. For more info take a look at KB230738.

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