Here are some reasons why mail app error code 0x8007139f on windows 10/11 occurs;
Presence of Bugs: The presence of bugs or Software glitches corrupt the important files of the application. They interfere with functioning and even crash the mail app. That is why the app does not synch with emails. You can fix this issue by using a scanning tool and repairing them in some other way.App Settings: Sometimes the mail app error code 0x8007139f occurs when the system loses access to the app. The application settings are turned off that cease it to run properly on the system. You can simply go to windows settings and turn on the required functions.Failed Windows Updated: The outdated windows usually do not support the new features of windows. It is very important to check the latest available updates and download them to your system from time to time.Crashed App: The Mail app error code 0x8007139f can also be because of the crashed app. The bugs or system corrupt files can crash it. The users cannot send email through it. So, when the Mail App gets crashed, you need to uninstall it from your system and then reinstall it.Problem with Microsoft Account: Sometimes the problem in MS Account can be a reason for this error. If it gets stuck or just not working with the mail app, you can shift to the local account. It will help you in syncing with emails.
1. Check the Mail privacy settings
When you download Mail and Calendar App in your system, it needs activation and access to some features. So, you should go check the settings and turn on all the access required to fix the Mail app error code 0x8007139f on windows 10/11.
2. Repair or Reset Microsoft Stores
The Mail & Calendar app is associated with Microsoft Stores. If there are some bugs in the mail app or if its files get corrupt, you can repair them, by repairing or resetting the Microsoft stores. So, the following steps will help you in repairing the apps. But you need to save or have a backup of your data otherwise you can lose it all by resetting the MS Stores
3. Run the Windows Store App Troubleshooter
If you are still facing the Mail app error code 0x8007139f on windows 10/11., you can run the Windows Store app troubleshooter. Troubleshooting is a built-in feature in windows 10/11. It can detect the issue and resolve it on its own. If the Microsoft stores have some issue, it affects its apps too. Windows Store app troubleshooting will help you in detecting the issue and repair it. So, follow these steps;
4. Allow the Mail App through Windows Firewall
Windows firewall helps in filtering the information that comes from the internet to your system. Sometimes, bugs entered your system via the internet and can cause issues with the mail app in sending or receiving the emails. You can simply allow your app through Firewall so no external threat can damage your system. Here are some steps you can follow;
5. Login with the Local Account
Sometimes the error can occur because of a problem in Microsoft account. It simply does not sync with emails or is unable to use the mail app. In this case, you can shift to your local account and fix the issue. So here are some steps that can help you in shifting to a local account;
6. Reinstall the Mail and Calendar App
If you have applied all the above methods, but still getting Mail app error code 0x8007139f. Then there are possibilities that your app get crash. You can simply uninstall it from your system and reinstall it. So, here are some steps that you can follow for reinstallation;
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