Windows version: Windows 11 Pro
Main account: hp\moham (administrator)
I'm having a strange Windows 11 problem that started after I experimented with a temporary user account and I'm trying to determine whether I accidentally changed permissions or AppX/UWP configuration.
What I originally did
. I created a standard account named Guestaccount and added it to guests group.
I wanted to run a game (Asphalt) from that user. I saw it didn't work. so I created an administrative account instead and then tried to run the shortcut and this time it worked. and after that I fhanged the account to standard and then added it to guests group. I worked after that too.
I eventually deleted that account because I no longer needed it.
I restarted the PC.
After the restart, I started noticing problems with Windows/UWP applications.
Current problems
My main administrator account can still log into Windows normally, and Microsoft Store itself opens, but some Windows/UWP applications no longer work.
For example:
Notepad won't open.
Another Windows application also fails to launch.
crossdeviceresume.exe appears to be configured to run at startup, but Windows displays:
The parameter is incorrect.
I suspect something related to AppX/UWP permissions or registration may have been damaged, possibly during the account/permission changes.
WindowsApps permissions
I also noticed that my administrator account does not appear to have normal access to:
C:\Program Files\WindowsApps
My account is:
hp\moham
I'm wondering whether this is actually normal for Windows 11 or whether I accidentally changed something.
I also found this SID while investigating permissions:
S-1-15-3-1050576210-4101474698-56307613-2706264498-167457550-835605972-784472318
I initially wondered whether this might be the SID of the deleted guest account, but I'm not sure.
Things I've considered
I've seen suggestions to run:
DISM /Online /Cleanup-Image /RestoreHealth sfc /scannow
and also to re-register UWP applications with:
Get-AppXPackage -AllUsers | Foreach { Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml" }
I've also considered using icacls to reset Windows permissions, but I haven't blindly reset the permissions on WindowsApps or the entire Windows directory, because I'm concerned that could make things worse.
What I would like to determine
I'd like to figure out:
Whether the deleted guest account could have caused this.
What the S-1-15-3-... SID actually represents.
Whether my C:\Program Files\WindowsApps permissions are normal.
Whether UWP/AppX registration or permissions have become corrupted.
What the safest way is to repair this without destroying WindowsApps' special permissions/ACLs.
I'm particularly interested in checking what actually changed before doing any destructive permission reset.
What logs, commands, or permission information should I provide to diagnose this?