OSX: Office 2016 keep asking for Office 365 login when opening Outlook
Open Spotlight by selecting the magnifying glass at the top right of your desktop.
Search for and open Keychain.
Type in Office and then delete the data license file:
Microsoft office Identities Cache 2
Microsoft Office Identities Settings 2
Go to Library folder and open Group Containers, delete the following folders.
Reactivate your Office.
Outlook 2010 stock in safe mode
For Windows 32-bit running Outlook 32-bit or Windows 64-bit running Outlook 64-bit:
For Windows 64-bit running Outlook 32-bit:
Create Dword “DisableSafeMode” set value to 1
run this command in terminal: cupsctl WebInterface=yes
User name off the user (Casesentitive) get username by using the command who, look for the console line