The team is working to address issues with call controls that occur for users running both Teams and Skype for Business. We will let you know when there is more to share.
269 votesRikard Strand commented
It's possible for an admin to upload the picture on behalf of the guest users. However this should be self service (or some kind of consent to fetch from the original Azure AD instance).
I would suggest that Microsoft implements a way for guest users to self-service add a profile image using either a sharepoint site/portal or the teams client.
IT Admin’s now have the ability to configure apps on the left navigation of Microsoft Teams. You can learn more about that feature here: https://docs.microsoft.com/en-us/MicrosoftTeams/teams-app-setup-policies
As announced at Ignite we are currently working on enabling desktop users to add personal or favorite apps to their own left navigation.
As stated in the last update, the ability to use multiple Teams accounts at the same time is being implemented in stages for Desktop. Faster tenant switching functionality on the Windows client has been rolled out to the public ring fully, and Mac will begin rolling out soon. Work is in progress on cross-tenant notification improvements, and support for multiple accounts on desktop will follow. We’ll keep you posted!
Note: The ability to use multiple Teams accounts at the same time is supported on iOS & Android today.
Alex & the Teams team