SIRIS, ALTO, and NAS: Datto Windows Agent: Screenshots fail with error status 0xc000007b, referencing "wdFilter.sys" on Windows 2016 or 2019

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Issue

Datto Windows Agent Screenshots fail with a 0xc000007b error that references "wdFilter.sys" on Windows 2016 or 2019 Server.

Environment

  • Datto Windows Agent
  • Microsoft Windows 2016 and 2019

Cause 

Failed update attempts of Microsoft Windows Defender.  

Resolution

fig1.pngFigure 1: 0xc000007b error (click to enlarge)

This problem is the result of a known Microsoft issue with Windows Defender updates. You can verify this issue by checking the Application Event Log (external link) on the protected machine. Look for events regarding failed updates for Windows Defender.

You can resolve the issue by repairing the Windows Defender installation using Microsoft's recommended solution (external link).

Additional Resources

 

 


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