Forum Discussion

Copper Contributor

Oct 10, 2018

Outlook 2016 - Promping for windows credentials and O365 license reg. even with SSO.

Hello, When we start Outlook 2016 - Office 365 for the first time, it's prompting for Windows credentials and after that it promts for Office 365 login to register the Office license. BUT, we...

office 365

Lennart Ingemann Nielsen

Copper Contributor

Oct 10, 2018

Thanks for your input.
Sorry I missed the info, we're running latest version of Exchange 2016, not Exchange Online yet.

wroot

Silver Contributor

Oct 10, 2018

Then maybe you have to do Hybrid Modern Authentication for Exchange On-Premises https://blogs.technet.microsoft.com/exchange/2017/12/06/announcing-hybrid-modern-authentication-for-exchange-on-premises/

There is a list of requirements for it. Haven't done this myself, we use Exchange Online.