Forum Discussion
After a hybrid migration to Exchange Online Outlook clients not switching over.
Rob Axelrod Hello, not in my comfort zone here but I've heard of an almost identical issue before where they disabled MFA (temporarily) to get it to work.
If that's not the case maybe this is applicable
https://support.microsoft.com/en-us/help/3073002/after-migration-to-office-365-outlook-doesn-t-connect-or-web-services
That is an odd one. I would have immediately suggested autodiscover as the issue if you hadn't succeeded with the systray test.
Maybe try running the Support and Recovery Assistant on one of the affected machines to see if that;
A). Sheds anymore light on the issue.
B). Corrects the problem without you having to create the separate new profile.
You can find the SARA tool at https://www.microsoft.com/en-us/download/100607
Thanks Peter,
SARA is a good idea and I'll give it a shot but I really need to get to the root cause of the problem because this was a small pilot of about 10 users and I'm going to need to migrate another 500 or so for this organization so I need to figure out something proactive. I know as a last resort I can push a GPO and force a rebuild of the profile if I need to but what's the fun of doing a hybrid migration if you can't keep your old profile. I'll let you know what SARA tells me. In the mean time I'm setting up a test so I can do some Fidler traces when the client comes up and can't figure out what to do...maybe that will show something. It almost seems like the client isn't in the mood to do autodiscover until you poke at the config with a new profile.
