Windows 7 x64 and Volume Shadow Copies

[Guest]

HI,

I am experiencing the following problems when SPTD 1.74 is installed:

• When running:
  vssadmin list shadowstorage
  or
  vssadmin list shadows
  Error:
  Volume Shadow Copy Service error: Error calling a routine on a Shadow Copy Provider {b5946137-7b9f-4925-af80-51abd60b20d5}. Routine details IVssSnapshotProvider::QueryVolumesSupportedForSnap shots(ProviderId,-1,...) [hr = 0x8000ffff, Catastrophic failure
  ].
  
  Operation:
  Query volumes supported by this provider
  
  Context:
  Provider ID: {b5946137-7b9f-4925-af80-51abd60b20d5}
  Snapshot Context: -1
• Periodically in event log (mostly when using Windows Backup)
  Error:
  source: VDS Basic Provider
  Unexpected failure. Error code: 490@01010004

When SPTD service is set to disabled the problems disappear.

Is there a workaround?

[Digger]

Can be ignored:
http://support.microsoft.com/kb/979391/en

[Guest]

OK, I wasn't really bothered by that one. But the other problem renders vssadmin useless... You can't even use it to check on or delete single shadow copies.

[Digger]

SPTD does not interact with Volume Shadow Copy Service in any way, so we have no idea currently what causes this; and on our systems this issue does not occur.
Anyhow, please tell us your detailed system specs, and how you setup your backup, so we can try to reproduce it.

[Guest]

Sorry that I took so long to respond, I was out of town.

The Backup itself has no problems. It completes just fine (except for the message, but as you said it can be ignored).
The real problem was that vssadmin does not work as it always encounters a "catastrophic failure" as long as SPTD is loaded. (see command-lines first post)