Windows11 Fix

Problem Windows apps slow and taskmgr refuse to launch.

Open CMD in admin mode

System scan

sfc /scannow

e.g. output from svc

Beginning system scan.  This process will take some time.

Beginning verification phase of system scan.
Verification 100% complete.

Windows Resource Protection found corrupt files and successfully repaired them.
For online repairs, details are included in the CBS log file located at
windir\Logs\CBS\CBS.log. For example C:\Windows\Logs\CBS\CBS.log. For offline
repairs, details are included in the log file provided by the /OFFLOGFILE flag.

run DISM cleanup

>DISM /Online /Cleanup-Image /RestoreHealth

e.g. output

Deployment Image Servicing and Management tool
Version: 10.0.26100.8737

Image Version: 10.0.26200.8875

[===========================63.4%====                      ]

next run msconfig and disable all not microsoft services under startup config.