Editor’s Note: This tech tip comes from Nate, on our development team.

Several of our users were reporting that when they used ShadowProtect Server or SBS Edition on Server 2008 x64 with Exchange 2007, that even with all hotfixes applied their Exchange service (store.exe and the transport as well) would periodically hang at the start of a backup.  The only way to recover from this state was a reboot.  Not fun.  We analyzed this issue and discovered that such hangs would occasionally occur with Exchange 2007 when *any* product uses Microsoft’s Volume Shadow Copy Service (VSS) to establish a volume snapshot. 

After discovering that this issue could be reproduced with only Microsoft executables, we delivered the details of this issue to Microsoft Support, and happily they were able to find and fix this issue in short order.  See KB968621 for more information on this particular issue.  The fix for this issue is now available from Microsoft as part of Update Rollup 9 for Microsoft Exchange Server 2007 Service Pack 1.  We encourage all users of ShadowProtect and Exchange 2007 to apply this Rollup 9 update.

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