43831: Acronis backup software: Windows mapped network drives are not supported

Last update: Tue, 2020-09-01 23:20

Symptoms

You mount a network share as a Windows mapped drive in Windows Explorer or through the net use command. When you use Acronis software, you may observe the following:

  • Mapped drives are not listed/available in GUI (e.g. as the backup source/destination).
  • Backup via acrocmd command line tool to a mapped drive fails.

Cause

Windows mapped network drives are not supported as they are mapped on a per-user basis and are not available for built-in accounts such as Local System or Network Service. This restriction is built-in to Windows at the operating system level.

When you map a network drive, it becomes mapped only under a respective Windows account on the local machine - and thus it is not accessible to Acronis services executed in the context of the system account.

Solution

Use UNC path to specify a network share:

\\ServerName\Sharename\

OR

\\192.168.0.1\Sharename\

More information

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