Backup Or Copy Fails With The Error “VSS: Can’t Read Volume Data”

Scenario

You’re backing up or copying a disk, The operation fails, and you get a dialogue window with “VSS: can’t read volume data”

Reason 1

Filesystem or disk errors. This usually results from subtle errors in filesystem data. Windows does a good job in ignoring them, but our programs can’t always do that.

Solution 1

You need to correct them with the Windows checkdisk tool.

#1. Launch an elevated command prompt. On Windows 7: Start > All Programs > Accessories > find Command Prompt and right click it > Run as administrator. On Windows 8: right click the faux Start button area > Command Prompt (Admin).

#2. Run:

chkdsk X: /f /r

Where X is substituted with the letter of one of the volumes involved in the intended operation (the one you’re trying to back up). The flags /f  and/r tell the program to look for filesystem and disk errors and correct them. The program may require restart, in this case input Y > Enter and reboot the computer.

#3. Repeat #2 for every other volume involved in the operation.

Afterwards, run the operation again and see if this helped.

Reason 2

Outdated version of the program. Under some conditions, this could occur in older versions of our software (prior to generation 12).

Solution 2

If you’re using one of those, and solution #1 doesn’t help, upgrading should solve the problem.

If you’re still encountering the issue, please send the following additional information to our Support Team:

• Run Command Prompt (Administrator), type:
  

  vssadmin list writers
  vssadmin list providers

  Send the output (either copy text or make a screenshot).

• Open Registry Editor (regedit),
  navigate to HKEY_LOCAL_MACHINE – SYSTEM – CurrentControlSet – Control – Class – {71A27CDD-812A-11D0-BEC7-08002BE2092F}
  Specify the value set in UpperFilters parameter (if present).
• Please run the process again, wait until it fails, then navigate to Home – Log Saver to save the log files. Send them to Support Team.

Backup, Backup & Recovery, Copy, Drive Copy, Hard Disk Manager™ for Windows, Migrate OS to SSD, Migration, Virtualization
Tags: backup, copy, error, issue

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