The VSS Writer timed out (0x800423f2)

Hello

We have a problem with the VSS Writer with several customers, but no solution found on the Symantec/Microsoft forums.

The costumers are running SBS 2008, Service pack 2 and Exchange 2007 Sp3, all windows updates are installed.

These customers are running Symantec Backup Exec 2010 R3 with SP1 and all the latest hotfixes.

The problem is that we can't backup the exchange database. It only works when we do a IIS reset, the backup will work one day, and fails the day after.

Backup
V-79-57344-65233 - AOFO: Initialization failure on: "\\SBSMICHOEL\Microsoft Information Store\First Storage Group". Advanced Open File Option used: Microsoft Volume Shadow Copy Service (VSS).

Snapshot provider error (0xE000FED1): A failure occurred querying the Writer status.

Check the Windows Event Viewer for details.

Writer Name: Exchange Server, Writer ID: {76FE1AC4-15F7-4BCD-987E-8E1ACB462FB7}, Last error: The VSS Writer timed out (0x800423f2), State: Failed during freeze operation (9).

All the VSS writers are stable. No errors.

The backup of the exchange database is now running separately from the daily backup, daily backup runs fine. Exchange Not.

Can anyone help me with these?

Greetz

Tom