Good Day
I'm having the weirdest of issues. We have hosted emails by a 3rd party and no Office 365 services at all but recently users on the network started getting pop-ups requesting for Office 365 login.
The alternative solution was to disabled Office 365 authentication from the registry but this is starting to fail now and the prompts have come up again.
The office versions in use vary between 2013, 2016 and 2019.
Thanks for any assistance.
Regards Ronnie M