enable modern authentication office 365 registry

On the other hand, Outlook clients leveraging MAPI over HTTP would reconfigure without incident.

This is due to RPC over HTTP not supporting modern authentication. Microsoft suggested to disable the modern authentication till the time issue is not fixed.In a previous article, we discussed how a conditional access policy blocking basic authentication prevents Outlook clients (leveraging RPC over HTTP) from reconfiguring after a mailbox migration to Exchange Online. When we are switching to another proxy, the authentication working fine. We have Azure MFA already enabled from long time and issue just appeared now. The problem is outlook authentication is stopped working suddenly on one of the proxy (which is a bypass proxy) on which it was working previously. The outlook authentication was working fine and suddenly it broke. In one of our customer’s environment suddenly we got this issue. I also document fixes like this here so this is the powershell that he wrote up to run on end-user systems experiencing these issues (stolen from article, all credit goes there)… this is THE SILVER BULLET to end your Microsoft Authentication woes: Solving Modern Authentication Issues with Office 365 If any of that sounds familiar, I highly recommend you read the article he published on linked-in…. You call Microsoft Support complaining of these issues and they are eventually stumped and tell you to rebuild the desktop/laptop from scratch… great for end-users that deal with this issue 1 year into the job and rather like their systems as-is… -or- MS Support tells you to pop a registry key into the end-user’s system which just disables Modern Authentication all together – which may fix Outlook but leaves many many other things broken… Admins have an impending sense of “dread” when setting up systems for new users because 80% of the time they are going to spend hours sorting out the above issues.Ĥ. Turning on Azure MFA for an end-user ruins their life (and yours) because all office applications, teams, etc. Outlook client can’t connect and/or authenticate for end-usersĢ. A colleague of mine recently solved one of the biggest pain points I have dealt with regarding Office365 – that is, Microsoft’s seemingly hit-or-miss modern authentication.ġ.

Enable modern authentication office 365 registry