Hi Wenhui Wang,
Good day. I'm Jhun an independent advisor. Your Notepad issue may be cause to some reasons, like architecture mismatch, region and edition restrictions, corrupted appx package or dependencies, old Windows feature experience pack, and etc. Try to do this steps, and let's try to reverse these causes, and see what will fix the problem.
A. Check System architecture.
- Press Win+R, type and run msinfo32
- Check "System type". If it says ARM64, make sure the Store version is compatible with ARM.
B. Install Notepad via optional features instead of Store.
- Go to Settings > Apps > Optional features > Add a feature.
- Search for Notepad then install it.
C. Reset Microsoft Store and re-register apps.
- Press Win+R : wsreset.exe
- Open PowerShell as Admin and copy, paste and run each of this commands:
Get-AppxPackage Microsoft.WindowsNotepad | Remove-AppxPackage Get-AppxPackage -allusers Microsoft.WindowsNotepad | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
D. Try a local MSIX download. If the Store version is incompatible, you can download the Notepad MSIX package from a trusted source (like Microsoft’s official GitHub/website) and install it manually.
E. Use legacy Notepad temporarily. Windows 11 still includes classic Notepad in C:\Windows\System32\notepad.exe. You can run it while troubleshooting.
I hope this helps.
Regards,
Jhun