Comments on: Diving into the Details of Microsoft Teams Shared Channels

By: Vaughan van Dyk

Vaughan van Dyk — Fri, 01 Dec 2023 09:25:11 +0000

In reply to Tony Redmond. Thanks very much for confirming this, Tony. Agreed fully about the positive being sharing with larger teams and that it is dynamically kept up to date with whatever the host team's membership is at any time. I just feel it would be better that one can undo this team binding for the shared channel after creation if needs be (not unlike breaking permissions of a SharePoint subsite at a later stage from its parent site). Failing that, a larger warning about this checkbox on the shared channel creation dialog box.

By: Tony Redmond

Tony Redmond — Thu, 30 Nov 2023 17:07:29 +0000

In reply to Vaughan van Dyk. What happens is that you bind the membership in the shared channel to the roster (membership) of the hosting team. To remove the user, you need to remove them from the team. The upside of the mechanism is that it makes it very easy to share channels with large teams (or even small teams). The downside is that you lose some control.

By: Vaughan van Dyk

Vaughan van Dyk — Thu, 30 Nov 2023 14:07:55 +0000

Great article Tony – thank you for unpacking this and in the comments further too. I am just trying to understand what happens when you create a shared channel and, at creation, select to share the channel with the host Team (i.e. select the “Share this channel with everyone on the team” checkbox). Doing that, anyone later added on the Team level will automatically have access to the shared channel via their Team membership. However, this implicit membership cannot be undone later for the shared channel (according to the Microsoft support page about creating shared channels) without the user being removed from the Team as well.

As such, if one wants to have more control over who in the host Team can access the shared channel later, it would be better to leave that checkbox deselected when creating the channel and rather manually add the host Team as a ‘member’ afterwards (so that you can more easily customise who in the Team can have access at any point).

By: Tony Redmond

Tony Redmond — Fri, 22 Sep 2023 08:50:27 +0000

In reply to David Williams. Disabling the ability to add new shared channels has no effect on existing channels.

By: David Williams

David Williams — Fri, 22 Sep 2023 08:24:36 +0000

Thanks Tony, this article is rally useful. I have a question if you don’t mind! If I have existing Shared Channels and I deselect the ability to create (additional) Shared Channels within the Policies, does this have any effect on those existing Shared Channels please? Do the Shared Channel SharePoint sites get deleted etc?

By: Tony Redmond

Tony Redmond — Wed, 30 Aug 2023 13:18:42 +0000

In reply to Anri Minnie. I don't believe that shared channels support the channel calendar app. That app reads events for a channel from a group mailbox and I don't think Microsoft has updated it for shared channels.

By: Anri Minnie

Anri Minnie — Wed, 30 Aug 2023 09:03:10 +0000

Hi Tony,

I am trying to add the Channel Calendar to my shared channel. Everything goes smoothly (no errors popping up). It even appears as a tab at the top of the shared channel. But then it disappears after 3 seconds. Why is that..?

By: Tony Redmond

Tony Redmond — Tue, 02 May 2023 16:20:53 +0000

In reply to Prabhakara. I have no idea. I have not looked into the situation at all.

By: Prabhakara

Prabhakara — Tue, 02 May 2023 16:19:47 +0000

In reply to Prabhakara.

update:
the scenario only works if the external user account email & UPN is same, in the Graph API call able to find the account.

But if the user account UPN is different from the email, then the Graph API calls fails to find the account. unfortunately, we only deal with external email Ids, and in fact we don’t know their UPN.

do you think any workaround?

By: Tony Redmond

Tony Redmond — Tue, 02 May 2023 16:14:41 +0000

In reply to Prabhakara. The Teams client might be making two calls. One to get internal users, the other to get external users. Who knows? I don't have access to the code.