To start, run the following commands on the machine itself. Once each of these commands is complete, we ask that you flag the agent to complete a differential merge (this can be done by going to the Protect Tab > Configure Agent Settings for the agent > Force Differential Merge from the left-hand navigation bar > force it on the OS Volume). The next backup will be that differential, and once that is complete, we ask that you review the subsequent screenshot results. Again, here are the commands in question:
sfc /scannow
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
If that does not resolve the issue, this would warrant the completion of a new full backup of the agent's C: volume by deleting its live dataset (NOTE: this does not delete any historical backups). This can be done by referencing the following steps:
1. Open the Remote Web
2. Open the Protect tab and navigate to the agent with failing screenshots
3. Click on "Configure Agent Settings"
4. Scroll down to Volume Level Backup Control on left-navigation bar and select it
5. Click the red trash can icon next to the OS volume (usually the C:\ volume)
6. Confirm you wish to destroy the live dataset for that volume
7. Go back to the Protect tab and start a new backup
The first portion of the steps will allow the agent to attempt to amend any changes made by the file system checks commands into the base image of the agent's dataset, while the live dataset deletion will be the final option, as it will instead just capture a new full snapshot of the contents of the production server's OS volume.