Failed to perform Veeam VSS freeze: guest OS 'otherGuest' is not supported

KB ID: 1062
Product: Veeam Backup & Replication
Version: 5.X
Published: 2011-07-19
Last Modified: 2020-08-13
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Challenge

When backing up a Windows server, VSS fails.

You receive the following error when backing up a Windows Server:

Indexing guest file system Failed to perform index: guest OS 'otherGuest' is not supported

Freezing guest operating system Failed to perform Veeam VSS freeze: guest OS 'otherGuest' is not supported

Cause

VMware tools do not recognize guest OS and mark it as OtherGuest.

Solution

To address, use Registry Editor and add the following entry: 

 

HKLM\SOFTWARE\VeeaM\Veeam Backup and Replication\
VssOtherGuest
DWORD = 1

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