Fix Win10 Mail App

Windows 10 Mail App not working….

We have had a few people complaining about emails not syncing, Mail app not opening and problems adding new email accounts.

Windows 10 mail app has some known problems and simply resetting the app can often resolve these issues.

Most problems can be repaired by using the following the steps.

A fix for Mail App “Error 0x8007139f” can be found at the bottom of the page


1. How to reset the Mail app Settings

Click Start button
Select Settings
Click Apps
Click Apps & Features
Select the Mail and Calendar app from the list
Click on Advanced options

Click Reset button

The Mail app should work fine, if not try one of the solutions below…


2. How to uninstall the Mail app on Windows 10 (advanced users)

Right-click start button and select Windows PowerShell

Right-click and select Run as administrator

Copy & Paste: Get-AppxPackage Microsoft.windowscommunicationsapps | Remove-AppxPackage


3. How to reinstall the Mail app on Windows 10

Open Windows Store and search for Mail and Calendar and click install.


4. How to install missing Mail app packages on Windows 10 (advanced users)

Type CMD in search box and right-click Command Prompt and click Run as administrator

Copy and Paste: dism /online /Add-Capability /CapabilityName:OneCoreUAP.OneSync~~~~0.0.1.0

Reboot your computer and mail app should be working fine now.


How to Fix Windows 10 Mail App Error 0x8007139f

To begin open the Settings menu go to Privacy, then select Email from the list of options in the left-hand pane. Next, enable Allow Apps to Access Your Email and make sure the Mail and Calendar option below is also enabled. If these options are already enabled when you enter the menu, disable them, Restart your computer, then re-enable them. After your computer restarts, the Windows Mail app will allow you to use the app without error 0x8007139f.