Since we announced in 2019 that we would be retiring Basic Authentication for legacy protocols we have been encouraging our customers to switch to Modern Authentication. Modern Authentication, based ...
Published Apr 19, 2021
Version 1.0
Blog Post
Hello Experts,
We have "Modern Authentication"enabled. And are using a very recent version of Microsoft 365 desktop apps.
License is Microsoft 365 Business Standard.
We are trying to roll out a custom built in house Identity Provider.
We have implemented both SAML 2.0 and WS-Federation passive flow in the same.
Done all the steps from federating a domain to taking care of the UPN and the ImmutableID.
In both (SAML/WS-Fed) cases, we are able to get a user in the domain to successfully do the Web Authentication and login to OWA/Microsoft 365 portal (office.com). Basically, all browsers work great. (Edge, Firefox, Chrome)
But, adding the user to the Outlook thick client (Windows, MAC and IOS APP) does not prompt and stays at an empty login page.
What are we missing ?
Any help, pointers is appreciated.