Apps can leave lots of unused files behind, such as huge dump files, lots of log files. Let's clean them up and reclaim some disk space.
We can use a disk usage analyzer such as WizTree (which is very fast on NTFS disk since it reads from $MFT).
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Desktop Central
C:\Program Files (x86)\DesktopCentral_Agent\logs\C:\Program Files (x86)\DesktopCentral_Agent\logs\Dump\C:\Program Files (x86)\DesktopCentral_Agent\USB\Record\(here's the home for thousands of extremely long file names)
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Dell Command Update
C:\Windows\{DDA48389-C896-48D7-981F-F935B938B0DE}\- and similar folders
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Dell Power Manager
C:\Windows\{99D1A468-B023-42D4-9816-F2EF0C67631F}\- and similar folders
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Not safe to delete
C:\ProgramData\Microsoft\Crypto\SystemKeys(250k of small 1KB files occupied 1GB of space) (seems to related to Desktop Central according to this complain https://docs.microsoft.com/en-us/answers/questions/508389/cprogramdatamicrosoftcryptosystemkeys-folder.html)
many long file names (up to 202 characters) in DesktopCentral_Agent/USB/Record https://imgur.com/a/YpCzAk9