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 The auto-complete list issue may arise if the Windows, Mail app, and People app of your system are outdated as it can create incompatibility between the OS modules.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?

Remove people from windows 10