Failed to perform Veeam VSS freeze: guest OS 'otherGuest' is not supported
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
HKLM\SOFTWARE\VeeaM\Veeam Backup and Replication\
VssOtherGuest
DWORD = 1
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