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June 29th, 2026 13:48
Windows 11 high disk usage
I noticed that my Windows System and Reserved files are using over 129Gb of the disk space. Most of it seems to be in three folders.
Windows 52gb
Program Files 32 gb
Program files (x86) 11 gb
That just seems like an insane amount (more than 1/3 of the disk space) I have already run chkdsk /r and there doesn't seem to be a problem. So what is going on? How do I fix this disk space hogging
Currently running Windows 11 Home Ver 25H2 OS build 26200.8655
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Ravig80111
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June 30th, 2026 09:03
The problem appears to be some software by Rivet Software called SmartByte that gets installed if you use the Dell Assistant (that seems to be general consensus) and it causes a the Capability Access Manager file to get corrupted which then results in the file getting progressively larger.
The process of deleting the corrupted file is somewhat complex
Step 1: Boot into Safe Mode
Step 2: Delete the Corrupted Log File
Once in Safe Mode, Windows will not be running the Capability Access Manager service, allowing you to modify its files. [1, 2]
takeown /f "C:\ProgramData\Microsoft\Windows\CapabilityAccessManager" /r /d y
icacls "C:\ProgramData\Microsoft\Windows\CapabilityAccessManager" /grant administrators:F /t
del "C:\ProgramData\Microsoft\Windows\CapabilityAccessManager\*.db-wal" [1, 2, 3]
Step 3: Restart and Check for Issues
Removing the SmartByte program using the Control panel was straightforward, but I noticed that there are still residual services that are running that were not removed. I guess I needed to turn them off first before removing the app. Now I am stuck with these services programs but I disabled them in the Services.