Windows 11 Repair

Open a PowerWhell terminal run as Administrator

DISM /Online /Cleanup-Image /RestoreHealth

Else

sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth

Example output

Microsoft Windows [Version 10.0.26100.1742]
(c) Microsoft Corporation. All rights reserved.

C:\Users\X1>DISM /Online /Cleanup-Image /RestoreHealth

Deployment Image Servicing and Management tool
Version: 10.0.26100.1150

Image Version: 10.0.26100.1742

[==========================100.0%==========================] The restore operation completed successfully.
The operation completed successfully.

Else

# Mount Windows-11-Install ISO using "Open With ... Windows Explorer ", and then run : 

# Find index 
dism /Get-WimInfo /WimFile:D:\Sources\install.wim

# Set to proper index, e.g., 6
DISM /Online /Cleanup-Image /RestoreHealth /Source:D:\Sources\install.wim:6 /LimitAccess

Else

• Create installation USB of downloaded Windows 11 Disk Image (ISO) using rufus
  • Select Bypass TPM
  • Bypass all the Microsoft nonsense
• Reboot and Disable TPM at UEFI menu
• Run setup.exe of the USB volume (Windows 11 Installation)
• Choose Upgrade this PC now and select Keep personal files and apps.

Else

• Mount Windows 11 install ISO
• Run setup.exe from the mounted drive.
• Choose Upgrade this PC now and select Keep personal files and apps.
• Follow the installation process.

Else disable TPM and then try again

• Open regedit
• HKEY_LOCAL_MACHINE\SYSTEM\Setup\MoSetup
• Right-click in the right pane → New → DWORD (32-bit) Value.
• AllowUpgradesWithUnsupportedTPMOrCPU
• Double-click it, set Value data to 1, and click OK.
• Close regedit
• Restart

Else

If Windows still blocks installation, delete appraiserres.dll from the USB.