Fix Cumulative Update KB5066835/KB5066128 Not Installing On Windows 11
How To Fix Cumulative Update KB5066835/KB5066128 Fail To Install, Fix Download/Install Error Code when Updating KB5066835/KB5066128 On Windows 11, Fix Can't Update Windows 11 with KB5066835/KB5066128 Update
Step 1) Pause and restart the update
Step 2) Run SFC & DISM Command
sfc /scannow
Dism /Online /Cleanup-Image /RestoreHealth
Step 3) Start/Restart App Readiness, Windows Update & Background intelligent transfer service
Step 4) Run Windows 11 Installation Assistant
https://www.microsoft.com/en-us/software-download/windows11
Step 5) Use Microsoft Update Catalog
https://www.catalog.update.microsoft.com/Home.aspx
Step 6) Use option “Fix Problems Using Windows Update”
Step 7) Use Media Creation Tool
https://www.microsoft.com/en-us/software-download/windows11