Cannot open Mail and Calendar app on Windows 11/10

If you are not able to open the Mail and Calendar app on your Windows 11/10 device, the solutions provided in this post may help you fix the problem. The users who experienced this problem have stated that Windows shows notifications for all new emails but they cannot open the Mail and Calendar app on Windows 11/10 to view or read the email messages.

Cannot open Mail and Calendar app on Windows 11/10

You can try the following fixes to make things normal again:

1. Run Windows Store Apps Troubleshooter
2. Run SFC and DISM scans
3. Check for Windows Update
4. Re-register the Mail and Calendar app
5. Repair or Reset the Mail and Calendar app
6. Uninstall and reinstall the Mail and Calendar app

Let’s see all these fixes in detail.

1] Run Windows Store Apps Troubleshooter

When Windows Store Apps do not start or crash unexpectedly or show some error, running the Windows Store Apps Troubleshooter can fix the problem. Microsoft developed automated troubleshooting tools to help users fix some common issues on their Windows 11/10 devices.

Because Mail is a Windows Store App, you can run Windows Store Apps Troubleshooter to get the issue resolved. After the troubleshooting process gets completed, check if you can open the Mail and Calendar app.

2] Run SFC and DISM scans

Sometimes errors occur due to system files corruption. System File Checker scans your system for system files corruption and repairs the damaged or corrupted system files (if any). Run an SFC scan and wait till the process gets completed. If the problem was occurring due to the missing or corrupted system files, the System File Checker tool will fix it.

DISM tool also repairs the corrupted system image files, like the SFC tool. When the SFC tool fails to repair the corrupted system image files, the DISM tool is used.

3] Check for Windows Update

Installing the latest updates released by Microsoft is recommended. The latest update packages contain security upgrades and fixes for the bugs reported by the users. Check for Windows Update. If an update is available, download and install it. After updating your Windows 11/10 system, check if the problem persists.

4] Re-register the Mail and Calendar app

Re-registering the Windows Store apps is helpful when the apps do not launch or display some error messages or crash after getting launched. Re-register the Mail and Calendar app for Windows 11/10 and check if you can launch it or not.

To re-register the Mail and Calendar app, you have to launch Windows PowerShell as an administrator then type the following command in it. When you are done, hit Enter.

Get-AppxPackage -allusers Microsoft.windowscommunicationsapps | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register “$($_.InstallLocation)\AppXManifest.xml”}

Let Windows execute the above command successfully. Do not close the PowerShell before the process gets completed.

5] Repair or Reset the Mail and Calendar app

If re-registering the Mail and Calendar app does not fix your problem, resetting it can fix the issue. The steps to reset the Mail and Calendar app in Windows 11 and Windows 10 are written below:

Windows 11

1. Open Windows 11 Settings app.
2. Go to “Apps > Apps & features.”
3. The list of all installed apps will appear. Scroll down and locate the Mail and Calendar app.
4. Once you find it, click on the three horizontal dots next to it and select Advanced options.
5. Now, scroll down and click Reset.

Windows 10

1. Press Win + I to launch the Settings app.
2. Go to “Apps > Apps & features.”
3. Select the Mail and Calendar app and then click on the Advanced options link.
4. Click Reset.

After resetting the Mail and Calendar app, the problem should get fixed. If not, try the next solution.

Read: How to change email signature in Windows Mail app.

6] Uninstall and reinstall the Mail and Calendar app

This solution has fixed the issue for many users. If you have tried all the above solutions but none of them worked, uninstall the Mail and Calendar app via Windows PowerShell and install it again. To do so, go through the following process.

Click on the Windows Search and type PowerShell. Right-click on Windows PowerShell from the search results and select Run as administrator. Select Yes in the UAC prompt.

When Windows PowerShell appears on your screen, copy the following command and paste it into the PowerShell. After that, hit Enter. To paste the below command, simply right-click on the PowerShell interface or press Ctrl + V.

Get-AppxPackage Microsoft.windowscommunicationsapps | Remove-AppxPackage

The above command will remove the Mail and Calendar app from your system. After uninstalling the Mail and Calendar app, open Microsoft Store and install it again from there.

How do I fix the Mail app in Windows 11?

If the Mail app is not syncing or working properly on Windows 11, first, you should run the Windows Store Apps Troubleshooter. If this does not fix the problem, check if any Windows update is available. Microsoft addresses the bugs reported by the users in Windows Updates. That’s why Microsoft always recommends its users keep their systems up to date.

If none of the solutions fix your problem, reset the Mail and Calendar app or uninstall it using Windows PowerShell and install it again from the Microsoft Store.

Why is my Windows 10 not opening apps?

If the apps are not opening on Windows, you can repair or reset them via Windows Settings. If repairing the apps does not fix the problem, reset them. You can also run Windows Store Apps Troubleshooter to fix the issue. In addition to this, re-registering the Windows Store Apps may also help.

You might need to update your password or give the account permission to sync to this device

If your Mail app is not syncing automatically you should update your password settings. Whenever any syncing issues are experienced, it is most advisable to update your Outlook Mail app0. At times, such issues are addressed in the cumulative updates that are rolled out by Microsoft hence make sure that you have all the latest versions of the OS and the Mail app installed.

Hope this helps.

Read next: Fix Mail app error code 0x8007139f on Windows.