Windows 10 Mail and Calendar app not working when clicked. The tile(s) in the start menu looks like the picture to the right.
Follow the step by step instructions below and always run command prompt (CMD) and PowerShell as administrator.

Windows 10 App Not Working When Clicked

Step 1. Single right click the start menu and select Command Prompt (CMD) administrator.

Step 2. Once command prompt has opened type the following “sfc /scannow” without the quotes and press enter. Let the scan finish then type “dism /online /cleanup-image /restorehealth” without the quotes and press enter. When both scans have been completed you will need to restart the PC or Laptop.

Windows SFC Scan Command Prompt (CMD)

DISM Scan, Command Prompt (CMD)

Step 3. After the PC has been restarted, open the start menu and type “PowerShell”, right click the PowerShell icon in the list and select run as administrator, clicking yes when asked.

Step 4. Type “Get-AppXPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}” without the quotes and press enter.
Wait for the scan to complete and try clicking on the app that has the fault.

PowerShell Windows get-appX

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