Forum Discussion
User hover cards causing Team/Group Guest users SharePoint access issues.
StephenRice - tagged you but not sure who else I might tag to on SharePoint team :).
Don't know if you guys have this on your radar or not, but there was a Teams post going on about guest acce...
I have a similar issue that could be related to this error. A brand new Office 365 group shared with an external users shows a windows authentication box. The external user can access the content, but some rollup images in the news webpart are not shown.
The network trace show that the browser is trying to access the following url at the sharepoint.com rootsite:
<tenant-rootsite>/_api/sphomeservice/context?$expand=Token,Payload 403 (Forbidden)
The external user however does not have any access to the tenant rootsite collection.