No disagreement with respect to "wiggle room". Drive thus being 80% full....
However 120 GB is generally considered to small and 240 GB is recommended.
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Disk Cleanup:
What about the other categories in Disk Cleanup? Temporary files, Windows Update Cleanup, Restore points, etc..
What does value does Disk Cleanup report as the "Total amount of disk space you gain"?
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Reading back I decided to take another look at
interactive service.
"The LenovoVantageService service is marked as an interactive service. However, the system is configured to not allow interactive services. This service may not function properly." "
https://kb.firedaemon.com/support/s...ed-on-windows-10-version-1803-and-server-2019
How is the laptop currently configured?
Reference:
https://support.quest.com/kb/116150...vices-this-service-may-not-function-properly-
Just take a look and enable if necessary.
If that does not work then stop there and post accordingly. Hold off/avoid any registry editing. Registry editing should be a last resort and attempted only after fully backing up everything. Just in case.....