Fix outlook: imap login is not email address

2. Registry Edit (Proceed with Caution):

Back up your registry first. Open the Registry Editor (search for "regedit" in the Start menu). Navigate to

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Profiles<your profile="" name=""><your account="" name="">

(replace with your actual profile and account names). Double-click on the "IMAP Server" value. 
In the "Value data" field, carefully edit the string to replace the email address with your desired username, 
keeping the rest of the information intact. (Don't forget login for smtp.)

Impressum:

PP EDV - linux based systems
Peter Presslein
Donato-Polli-Str. 40
91056 Erlangen
admin42 @ hc1pepre.de