Hi @
As per my test, this issue does come up, but it only come up for half an hour. I wait for around half an hour and the permission has worked.
This is my testing process:
- Create AD group in M365 Admin Center. Add a user in this group.
- Set permission for this group.
- Add another user to the group.
Finally, I have removed this group and re-add in Site Permission settings. It does work.
This is knowing issue with Active Directory groups. It takes some time to apply new permissions. Sometimes it is few hours, sometimes few days.
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