How to Fix Mail Not Syncing Problem in Windows 10
If experiencing syncing problems with the Mail app or adding a new email account in Windows 10 Fall Creators Update.

If you're having this problem, you can try the following recommended workaround:

1. Open the Command Prompt by typing cmd.exe into Start Menu, right-click on Cmd.exe, and open it as an administrator.

2. Type the following command and press Enter key:

Code:

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


3. Restart your computer.

After restarting, open the app to confirm your account is syncing. If the account doesn't appear to be syncing correctly open the Mail Settings > Manage Accounts, select the account, and if the Account settings dialog is available, the component was successfully reinstalled.

In the case the account is still not syncing, you should delete and add the account again opening the Mail Settings > Manage Accounts, select the account, click the Delete account from this device option and click Delete. After removing the account, click the Add Account button to re-add it.

Alternatively, if you're experiencing syncing problems, you can also try resetting the Mail and Calendar apps using the Settings app.

   1. Open Settings.

   2. Click on Apps.

   3. Click on Apps & features.

   4. Select the Mail and Calendar apps.

   5. Click the Advanced options link.

   6. Click the Reset button.

How to Fix Mail Not Syncing Problem in Windows 10 VxAF7SG

After completing the steps, you may need to re-add all your accounts again.