How to Safely Clean the WinSxS Folder and Free Disk Space in Windows
When inspecting C: drive usage, users often notice C:\Windows\WinSxS consuming 15–25 GB. Crucial rule: NEVER manually delete files from this directory. Doing so will corrupt the Windows kernel.
1. What is WinSxS?
WinSxS represents the Windows Component Store, holding multiple versions of system assemblies, superseded updates, and optional feature manifests.
2. The Official DISM Clean-Up Procedure
# Analyze component storage
Dism.exe /Online /Cleanup-Image /AnalyzeComponentStore
# Purge superseded update versions
Dism.exe /Online /Cleanup-Image /StartComponentCleanup /ResetBaseClean Space Safely with PruPru
The Disk Cleaner in PruPru.exe executes certified system cleanup scripts automatically.
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