[Forum FAQ]How to fix built-in Apps that cannot work correctly in Windows 10

Question

_{Monday, September 14, 2015 1:28 AM | 7 votes}

Scenario

In Windows 10 RTM, someone may encounter this issue: Store apps cannot launch, crash or not work correctly. (Note: Take Mail app as the example in this article.)

Solution:

We can re-register this app or reinstall it from Windows store to solve this issue.

Note: we can also use solution 1 to fix problems with Cortana, Start Menu and Settings.

Solution 1: Re-register this App:

1. Run Windows PowerShell as Administrator.
2. Type Get-AppxPackage, press Enter. 
3. From the output list, find the Mail App and remember the InstallLocation.
4. Type this command: Get-AppXPackage | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_17.6120.42011.0_x64__8wekyb3d8bbwe\AppxManifest.xml"}
5. It would run as below: 

Solution 2: If re-register App cannot resolve your issue, Please reinstall the App.

Step 1: Uninstall it completely

1. Run Windows PowerShell as Administrator.
2. Type Get-AppxPackage, press Enter.
3. From the output list, find Mail App package and remember its PackageFullName as below:
4. And then type the following command: Remove-Appxpackage –Package microsoft.windowscommunicationsapps_17.6120.42011.0_x64__8wekyb3d8bbwe

Note: After running this command in Windows 10, the Mail icon still appear in the App list and Start menu. However, you cannot click to launch it. Just ignore and continue next step.

**Step 2: Reinstall the App from Windows Store **

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All replies (5)

_{Monday, November 30, 2015 12:32 AM}

I have tried every other tutorial, this is the ONLY one that has worked! I have been scouring the internet for hours.

Thank you

_{Wednesday, April 6, 2016 7:41 AM}

Thanks a lot!

_{Tuesday, September 20, 2016 11:15 AM}

And what if this is happening with Windows 10 Mobile?  

I got the same issue with only some of my email accounts syncing properly. 

_{Wednesday, May 24, 2017 11:21 PM}

Nothing else worked until I found this...after a LOT of digging around.  Thanks for all the help :)

_{Wednesday, November 20, 2019 6:28 AM}

During re-installation it's saying app in use couldn't re install. The screen is closed and there is nothing on task manager starting with mail.. exe . I don't know what to stop. Anyway now I'm trying entire removal and re-installation part. Most probably I need to set my accounts again :(