Forum Discussion
Guest permissions under settings in a Team
Brian_H Ah I see, unfortunately not something that can be done via a setting. If it's a hard requirement then you could potentially use a scheduled Graph query to set the option to off:
Update team - Microsoft Graph v1.0 | Microsoft Docs
You would need to update the Guest Permissions with something like:
"guestSettings": { "allowCreateUpdateChannels": false }
Unfortunately it's not bullet proof but could be run on a schedule through Azure Automation or similar
Hello, adding to this as well as you can also prevent guests from being added to a specific team (group).
Re-read your post so this isn't applicable for your question but leaving it as it's quite handy on the topic.
https://docs.microsoft.com/en-us/microsoft-365/solutions/per-group-guest-access?view=o365-worldwide