our client has an issue with MS Teams. They were using MS Teams using their e-mail set up on custom e-mail server using @contoso.com domain. Now they have introduced an AD deployment using this domain name and domain accounts naming, including Exchange and other Office supporting products. They would like to use MS Teams using their personal accounts, however when trying to login to MS Teams using their domain-joined computers now, some of the users receive information to select the Domain/Organization and whatever they choose, they are redirected to login screen after a while. This question pops up even when they select the personal account. They are not able to login to Teams at all, the login screen just works for a while and redirects them back to login.
We have already tried to clear the cache of MS Teams and reinstalling the whole application. Unfortunately, it did not help. How should we proceed?