...right click on Windows PowerShell and select Run as administrator.
Then type following command and press Enter key:
Get-AppXPackage -AllUsers -Name Microsoft.WindowsCalculator | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml" -Verbose}
[1] https://learn.microsoft.com/en-us/answers/questions/954577/c...
I have the new calculator app open literally all of the time and I've not run into any issues with it at all. In fact since it's been updated, it saves me from using Google searches for plenty of types of conversions too so I'd suggest the new update has been a large success.