Question: how to restore accidentally uninstalled built-in apps in windows 10?
Answer: Right-click the Start button.
Click Search.
Type PowerShell into the search field.
Right-click Windows PowerShell.
Click Run as administrator.
Type Get-AppxPackage -AllUsers| Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}