In early December 2020, Microsoft released a notification via the Office 365 Message Center, MC228482 – Configuration Change in Guest access for Microsoft Teams.
Starting February 8th 2021 Microsoft are turning on Guest access in Teams by default for any tenants that have not configured this setting! UH-OH!
What does this mean?
It means that if you haven’t explicitly set the configuration item “Allow Guest access in Teams” to OFF then it will be changed as a part of the above notification.
What can we do?
Well, in the Microsoft Teams admin center, you change the configuration to Off.. but wait.. it was set to off before by default?
So… you may now find that the setting has now changed.. The option could now be set to “Service Default: Off”
If you continue to want guest access turned off, In the Teams Admin center – Org-Wide settings, select the Guest Access, then in the drop down box select “Off”
If you have already enabled Guest access by changing the setting to On, no further action is required.
Please Double check your configuration! Just in case 🙂
I will be covering a session on Managing External and Guest Access in the coming weeks and will post about it here!
Thanks for Reading!