Microsoft store breaks after upgrading to 21H2

Hi,

I've found this problem in recent batches of Optiplex 5090s and Latitude 3520s.  After upgrading to Win10 21H2 using the Media Creation Tool, creating a new local account and trying to run store apps or the MS store itself gives errors like "You'll need a new app to open this ms-calculator link".  A partial workaround is granting each account admin rights and running 

Get-AppXPackage *WindowsStore* -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}

or 

powershell -command "Add-AppxPackage -DisableDevelopmentMode -Register \"C:\Program Files\WindowsApps\Microsoft.WindowsStore_22204.1401.3.0_x64__8wekyb3d8bbwe\AppXManifest.xml\""

will also work without admin rights, but the path is subject to change.  Wsreset, sfc /scannow, and other suggested fixes for similar problems have not helped.

I was able to reproduce the problem by taking a brand new 3520 out of the box, making no changes other than upgrading to 21H2 and adding a local user account.  Windows-R>calc then fails with the same error.

Is there something in recent Dell images that is causing this?  Is there a permanent fix, or should I just start doing clean installs on new PCs?