After updating Win 7 to Win 10 (build 10130 and/or earlier) the logon screen shows duplicate icons for each local account.
As you can see in the two images above each local account also has an icon named "Password"
The computer only has two accounts as you can see in the following image
If I then switch one of the accounts to a Microsoft account the double icon for that account is removed as you can see in the following image
How do I get rid of the duplicate icons after upgrading from Win 7 to Win 10?