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VSS Issue, error 8193, vssadmin writers list blocked by group policy

Posted on 2015-02-06
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Last Modified: 2015-02-12
I am having an issue with VSS.

I cannot run vssadmin from administrator command prompt. I get "blocked by group policy"

I am also getting the following error in event viewer:

Volume Shadow Copy Service error: Unexpected error calling routine RegOpenKeyExW(-2147483646,SYSTEM\CurrentControlSet\Services\VSS\Diag,...).  hr = 0x80070005, Access is denied.
.

Operation:
   Initializing Writer

Context:
   Writer Class Id: {5382579c-98df-47a7-ac6c-98a6d7106e09}
   Writer Name: TermServLicensing
   Writer Instance ID: {73f2ffd0-644a-4f64-8146-87e64596afd6}
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Question by:zwig2002
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Accepted Solution

by:
roycbene earned 500 total points
ID: 40594696
Are you running AppLocker or something like Cryptoprevent? Have you checked permissions to the mentioned registry key? Do you have a .exe restriction policy in place?
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Author Comment

by:zwig2002
ID: 40594706
It looks like cryptoprevent was run on the server. I am trying to undo the changes.
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Expert Comment

by:roycbene
ID: 40594709
That is the most common cause of this, in my experience. :)
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Author Comment

by:zwig2002
ID: 40594717
Do you have a solution for undoing what cryptoprevent did?
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LVL 3

Expert Comment

by:roycbene
ID: 40594749
Add the .exe to the whitelist.

This should get you what you need. :)

http://www.foolishit.com/cryptoprevent-v2-0-just-released-whitelisting-capabilities/


Let me know if there is anything else I can do.
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