SIRIS, ALTO, and NAS: Failed screenshot with customized login screen



This article describes the cause and solution for screenshot errors resulting from customized login screens.


  • Datto SIRIS
  • Datto ALTO


Figure 1: A custom Windows login screen (click to enlarge)

Because of the additional image processing involved, some elements of customized login screens can affect the image processing during the screenshot verification, including:

  • Complex rasterized background images
  • Complex fonts
  • Windows shell modification

Those potential changes can cause a bootable point to show as a failed screenshot.


Use the default Windows theme or manually configure the Windows machine so the login screen appears to be unmodified, then take a new backup. If the screenshot continues to show as failed, contact Datto Technical Support to troubleshoot the issue and verify that the recovery point is bootable.

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