In this context, resetting or reinstalling the Mail app may solve the problem. The addresses in the auto-complete list may keep popping up if the installation of the Mail app is corrupt. Solution 3: Reset or Reinstall the Mail App

Then reboot your PC and upon reboot, add the account back to check if the autocomplete issue is resolved.

Delete Account in the Windows 10 Mail App

Now click on the option of Delete Account from This Device and then click on the Delete button to confirm the delete action.

Open Manage Accounts in the Settings of the Mail App

Then, in the right pane, open Manage Accounts and select the problematic account.

Launch the Mail app and in the left pane (near the bottom of the pane), click on Settings.

But before removing the account, make sure you have the credentials available. In this case, removing the problematic email account and then adding it back to the Mail app may solve the problem. The issue could be a result of a communication glitch between the email account server and your PC. Solution 2: Remove and Read the Problematic Account to the Mail App If so, then update the People app and check if the Mail app is clear of the auto-complete issue.

Then, in the Microsoft Store, check if the People app has an update available.

Open the Microsoft Store Page of the Microsoft People App

Now click on the Get button and then in the dialogue box, choose Open Microsoft Store.

If not, launch a web browser and navigate to the page of the People app in the Microsoft Store.

Then, check if the auto-complete issue is resolved.

If sharing screen is shown, skip it and then check if an update of the Mail app is available.

Now, the Microsoft Store’s page of the Mail and Calendar app will be opened.Then, right-click on the result of the Mail app and choose Share. If not, press the Windows key and in the search box, type: Mail.Manually check for Windows updates of your system (including the Optional updates) and check if the issue is resolved.In this case, updating the Windows, Mail app and People app may solve the problem. The auto-complete list issue may arise if the Windows, Mail app, and People app of your system are outdated as it can create incompatibility between the OS modules. Solution 1: Update the Windows, Mail App, and People App of Your System

You can try the undermentioned solutions to delete AutoComplete in Windows 10 Mail app but before that, it will be a good idea to create a system restore point and backup the Contacts of the Microsoft People app.

How to Remove Addresses from the Auto-Complete List Windows 10 Mail App?

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