Truecrypt and VSS Error 0x8004230f

[lp@albersdruck.de]

Hi!

This is just for your information, maybe somebody else has the same problem and can use this solution:

I use Truecrypt to encrypt a small drive on one of our servers for sensitive personal data.
So far there have been no problems at all when backing up with Veeam B&R 7.

After the upgrade to v8, the job with that server fails with error in Veeam:

Code: Select all

 10.11.2014 02:26:07 :: Error: VSSControl: -2147212529 Backup job failed.
Discovery phase failed.
Cannot add volumes to the snapshot set.
Cannot add a volume to the snapshot set. Volume name: [\\?\Volume{8f3c0eff-87d2-11e2-86fc-000c2934ae53}\].
Cannot check whether volume supported by the system software provider.
VSS error: VSS_E_UNEXPECTED_PROVIDER_ERROR. Code:0x8004230f 

And this is shown in the Application Log (Event Viewer) on the server:

Code: Select all

Volume Shadow Copy Service error: Error calling a routine on a Shadow Copy Provider {b5946137-7b9f-4925-af80-51abd60b20d5}. Routine details Cannot ask provider {b5946137-7b9f-4925-af80-51abd60b20d5} if volume is supported. [0x8000ffff] [hr = 0x8000ffff, Catastrophic failure
].
... 

After searching for this error I found the solution that has so far worked:

• Dismount the Truecrypt Volume.
• In Truecrypt Settings/Preferences, enable "Mount volumes as removable media".
• Mount the Truecrypt Volume.

VSS works again and my backup job runs fine without errors.

[veremin]

Hi, Lars, thank you for posting the resolution that you've found; highly appreciated!

[peters.]

Hello, after this change, backup of mounted Truecrypt volume finishes without error. The file level restore does not find this backed-up volume, so I'm unable to restore just one file. The whole drive would maybe work...