Knowledgebase: RBS Client
VSS Open File Error - Event 33, SideBySide

VSS Error - Event 33, SideBySide in Application log (Event Log Error)

Error in backup log: 'Failure to backup open file'

The problem is the inability of the Endpoint module to load its VSS libraries due to missing/redirected Visual C++ runtime library routines. This is sometimes caused by the installation/uninstallation of Visual Studio development platform or other corruption.

The fix is to reinstall the 2008 SP1 Visual C++ Runtime Library routines as listed below: (pick your machine architecture and install 1 only)
Microsoft Visual C++ 2008 SP1 Redistributable Package. (x86)
Microsoft Visual C++ 2008 SP1 Redistributable Package. (64-bit)

Reboot not required.




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