DISM command error when cleaning the WinXC folder

Help with WinSxS. How do I remove up to 30 GB of junk data from the WinSxS folder in Windows 11 25H2?

Alexey Leenso

0 Reputation Points

April 18, 2026, 7:04 PM

Hello, please help! How can I safely clean up the WinSxS folder while preserving data and programs installed on my PC?

After upgrading from Windows 10 to Windows 11 25H2, I discovered that my system drive was running low on space. Diagnostics showed that this space was being taken up by the WinSxS folder.

I read about DISM commands for cleaning this folder, but each time I get an error at 5%, indicating that the cleanup failed. What could be the problem? Is a clean install of the new OS the only option?

DISM

Version: 10.0.26100.5074

Image Version: 10.0.26200.8246

[======================================================]

Component Store Information (WinSxS):

Component Store Size According to File Explorer: 39.53 GB

Actual Component Store Size: 34.65 GB

Dockerfile

Shared with Windows: 4.56 GB

Backups and Disabled Components: 30.02 GB

Cache and Temporary Data: 60.54 MB

Number of packages to release: 50

Component store cleanup recommended: Yes

Operation completed successfully.

C:\Windows\System32>dism /online /cleanup-image /startcomponentcleanup /resetbase

DISM System

Version: 10.0.26100.5074

Image version: 10.0.26200.8246

[== 5.0% ]

Error: 1726

The remote procedure call failed.

The DISM log file is located at C:\WINDOWS\Logs\DISM\dism.log