Forum Discussion
outlook 2010 and 2013 continually asks for password in hybrid environment
pazzoide76 So it all came down to MFA via Security Defaults? That's not the first time I've heard it as I now recall another conversation with a similar issue, not identical, where I actually suggested that. It didn't struck me as a solution this time and I can only blame my six weeks vacation..
harveer singh Good job!
pazzoide76 Please mark the above reply with the solution as "Best response" for future reference.
Try disabling modern authentication in cloud :-
Set-OrganizationConfig -OAuth2ClientProfileEnabled $False
Give it couple of hours or so, as it is a tenant wide setting it takes time to replicate.
Also Consider upgrading outlook clients as MS has it on its agenda to disable basic authentication in office 365.
Thanks for the reply
As previously written, I had already done that test (and it had given a negative result) however I made the change I waited 4 hours but the problem persists.
The weird thing as I wrote earlier that in a mirrored test environment (the only difference is that OAuth authentication between Exchange and Exchange Online organizations has not been enabled)
The speech of updating the Outlook clients is correct however 2010 and 2013 are supported until October and in the test environment they work ....
Thank you
Regards