I have a single user who is able to log into Yammer. He is getting a page connot be diplayed at persona.yammer.com - any ideas? He can authenticate to the rest of Office 365 just fine, and the rest of the users are working fine.
I don't have any great ideas on this so may need to put in support ticket since it's only affecting this user, but do have him try an incognito or private browser session and authenticate via portal.office.com in case there's an issue with a MSFT account vs work account.
Hi, Blake, we ran into this issue with a user or two as well, and we contacted Microsoft about it. They said it was a known issue, and deleting the user and having them access again resolved our issue. Hope that helps!