Has anyone ever had to set the NoDomainUser registry key in HKCU\Software\Microsoft\Office\16.0\Common\Identity ? I have a customer where the local domain creds are different to their O365 creds (Two seperate identities with no azure AD connect syncing the on prem accounts to azure ad) this obviously brings challenges one of which is O365 apps seem to be signin in using the username@domain.local creds as when you check in File > Office account it is using username@domain.local with no connected services. When you click on switch account you see the proper O365 account name@domain.com and when you switch to it the connected services are back. When i set the DomainUser registry key manually in the users registry hive everything works it doesnt list the username@domain.local account anymore and only has the O365 name@domain.com account which is what i want this is even after a log off/on. I now want to set the reg key for everyone but the problem i have is no matter how i set this registry key via GPP (Replace/Create/Update) or via Ivanti UWM EM Pre logon/Pre desktop it doesnt appear so i presume its being reset and deleted (Gpresults wizard / RSOP and Ivanti EM event logs show the key being set)