Error "The specified backup storage location..."

Error "The specified backup storage location has the shadow copy storage on another volume" using Windows System Backup

This error is not specific to Magnus Box. You may find more information online.

There is a problem with using the selected spool directory. The spool drive has its shadow storage configured in an unusual way that is incompatible with the wbadmin tool.


  • What kind of drive is the spool target? Is it a network share, or an external harddrive, or a SAN? If it is a SAN, is it a managed appliance?
  • What is the output of running this command as Administrator: vssadmin list shadowstorage


You may be able to workaround this issue by creating a network share on the same drive, and entering the UNC path to the share instead of the actual local drive letter.

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