If anonymous users are in the lobby (e.g. joining by first name only), it would be good to have a feature that allows communicating with users waiting in the lobby for identification (e.g. ask them to provide additional informaiton who they are). At present, you only have accept/reject option.

Same concept already in for SharePoint Online sites, disable guest access on tenant level and set for special single sites only "allow external sharing", must be possible also for teams (o365 groups), in same way, current situation at the moment a show stopper for us, current domain handling not a solution

Allow Guest Access users to easily join via Team Code or link to Teams Channel. Adding guests one by one can be tiring when you're inviting hundreds of guests to a Team.

While guests can now join a Team meeting, there is no "promote to presenter" option to allow them to share their screen. Without this, I'm forced to fall back to Hangouts or Zoom.

When collaborating in a Team with certain people it would be nice if you could limit adding guests based on their domain. For example, I create a Team to collaborate with Contoso, I want to be able to add only people with the contoso.com domain. This will prevent accidental mixing up of different companies in a single Team.

How do you change the Display name of a guest AFTER the invitation is sent? There must be an easier way than this:

http://lynciverse.blogspot.nl/2017/09/how-to-change-display-name-of-guest-in.html?m=1

Need ability to set security controls at the Channel Level, especially when External Guests are invited to the Team site.

Currently external sharing can be enabled/disabled for all Teams tenantwide at once.
It will be much more flexible if the external sharing could be enabled on per-team basis.

Allow Guest to only view specific channels in Microsoft Teams. Especially when a part of channel in a project is led by Vendors.

currently if we want any team to have guest access it has to be turned on globally. we want to have it turned off by default and still have ability to allow for designated teams. currently we have to catch each team when created and turn off and then turn it on for designated teams. this is a cumbersome process.

When guest users try to access notebooks they receive error messages.

This should be fixed.

Currently Teams Federation is provided through Guest access. There isn't much published collateral on the list of features (i.e. SIP to SIP or SIp to Other) defining what is required to build Federation with Partners especially where partners are on Skype and enterprise customer could be fully on Teams. Documentation is needing to provide customers guidance on how would you go about configuring with an OnPrem solution or what is needed to support federation in general. Full Federation guidance documentation is needed for these scenarios.

Allow guest (invited to Team or Meeting) access to the whiteboard. Team Owner or Meeting Host should have the ability to enable/disable as needed.

The ability to add guest users into Shifts is essential. Can you advise if this is on the roadmap and roughly when. I will have to look for an alternate product

Rather than have anonymous access just On/Off globally, it would be very helpful for admins to be able allow internal user or team exceptions for anonymous access. For example, allow anonymous access for the HR department to conduct video interviews while disabling anonymous access for all other internal users.

We known that guest cannot view the org of company, we also need to prevent guest to view the member's email address in Teams. It's a necessary security feature as well.

Instead of having to select tenant, pls have all teams in one list and mark those in other tenants with a globe. Much like Yammer.

Also have notifications displayed in the same manner. I.e one experience for everybody with no need to switch tenants.

It would give everybody a clearer and easier way of keeping track of all your teams, no matter of where they reside.