Troubleshooting VSS

Troubleshooting VSS

What is VSS?

VSS stands for Volume Shadow Copy and is a Windows-only service that creates a snapshot of computer files or volumes even when the data is being used. This is useful for MagnusBox to avoid issues with data being modified as the backup is being run. 

Common Problems

Issues with VSS cannot be easily solved from our end unfortunately as it runs on endpoint machines. Here are a few common issues one might see with VSS.

  • VSS is not running
  • VSS is disabled
  • VSS is not starting automatically
  • Transient issues

Common Fixes

Make sure VSS is running
  1. Go to Control Panel > Administrative Tools > Services.
  2. This should open a window with a long list of Windows service. Find the one that says 'Volume Shadow Copy' and double click on it.
  3. Set the startup type to 'automatic'
  4. Check the service status. If it's stopped, click the 'start' button.
Fixing transient issues

This error occurs when the machine is having difficulty holding I/O writes. It's recommended that you wait roughly 10 minutes before attempting the operation again, or restarting the machine. This error may also point to a faulty hard drive.

If you are running a Hyper-V host with multiple instances, there might be a problem with leftover Storagecraft clients. Uninstalling the clients from your VM instances should fix the problem. Read more about it here.

There is a comprehensive list of solutions we use to help deal with VSS errors here

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