Forum Discussion
External user access to Groups issues
I opened a support ticket and the help was great. What finally solved the problem was going to the Sharepoint site created for the Group. Click the settings gear and choose Site Permissions, then Advance Permissions settings. I clicked on the Members group, then change the URL part where is says "people.aspx?MembershipGroupId=6", so it says GroupID=0. This shows all the hidden entries you may not see. Mine had an entry for Everyone except external users. I am not sure why that showed up since my default is set to share groups externally, but once I deleted that entry, and the name of the external person I was having issues with, I was able to send a new invite and it works.
Is the Group a Public Group?
If this is the case (and I suspect so), you should not have deleted "Everyone except external users": it must be there for the Public Group to work correctly (and hence it was not the source of your problem).
The technician from Microsoft had me delete it. There is another entry for "Everyone" that we kept, but the "Everyone but external users" was causing issues for external users to get access.
Unfortunately, as we all know very well, the support representatives don't always give the correct suggestion... ;-)
Anyway:
- If the Group is public, "Everyone but external users" should be in the Members group and you should not delete it. (Generally speaking, it is better to leave the Owners and Members groups alone). I am pretty sure that Its presence was not the reason of your issues. On the contrary, "Everyone" should not be in the Members group, because its presence gives to all the external users in your tenant read/write access to every file and folder in the Group.
- If the Group is private, the Members group should instead be empty (apart the Group itself, of course).
Just my two cents...
