Teams - Tenant drop-down missing on the account I was invited with

Hi nikkle

You could well be correct here

Solution should be

1.) As user in Charlie tenant leave organisation Bravo

https://docs.microsoft.com/en-us/azure/active-directory/b2b/leave-the-organization

2.) Have tenant Bravo check their Azure AD and ensure you are not there - in either you tenant Charlie or tenant Alpha address. If so, delete it and then remove it out of the recycle bin

https://docs.microsoft.com/en-us/azure/active-directory/fundamentals/add-users-azure-active-directory

3.) Wait for some propagation time - let's say 24 hours to be sure (that's the max prop time usually in Azure AD

4.) Get tenant Bravo to reinvite you as user in tenant A on that address and ensure you are logged in in all clients as user in tenant A

Hope that answers your question

Best, Chris

Best, Chris