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List comments - tenant members can't tag guest users
We're getting an odd limitation when attempting to @tag users on our Sharepoint Lists. As a site owner and tenant user I can only see and select other tenant user accounts (it appears to be polling o...
TimHunt I have observed the same behavior in my tenant previously. I think this is a known limitation of SharePoint list comments.
You cannot @mention the external/guest users in list comments.
Reference: SharePoint Online/Microsoft Lists: @mention people in list comments
You can also raise a support ticket with Microsoft from admin center.
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It's a known limitation:
@mentions does not work with guest or external accounts (you cannot @mention such accounts nor can such accounts @mention in files outside of their tenant).
https://insider.office.com/en-us/blog/mentions-for-comments-in-word-excel-and-powerpoint-available-to-insiders-fast-slow
Please vote: https://feedbackportal.microsoft.com/feedback/idea/40e2deee-f543-ec11-a81a-0022484e21f1
@mentions does not work with guest or external accounts (you cannot @mention such accounts nor can such accounts @mention in files outside of their tenant).
https://insider.office.com/en-us/blog/mentions-for-comments-in-word-excel-and-powerpoint-available-to-insiders-fast-slow
Please vote: https://feedbackportal.microsoft.com/feedback/idea/40e2deee-f543-ec11-a81a-0022484e21f1