Forum Discussion
SharePoint document embeds stuck on Sign In screen [worldwide bug + reproducible]
Update: as of about 2024-04-29T20:30:00 (UTC) this just started working again for us. Seems like MS fixed whatever broke before we could get to the bottom of it. We had started entering the ticket and in reproducing the steps noticed it had started working. It was definitely still broken as of 2-3 hours ago for our tenant though.
Update: as of about 2024-04-29T20:30:00 (UTC) this just started working again for us. Seems like MS fixed whatever broke before we could get to the bottom of it. We had started entering the ticket and in reproducing the steps noticed it had started working. It was definitely still broken as of 2-3 hours ago for our tenant though.
Greg McMurrayMy investigation led me to https://developer.mozilla.org/en-US/docs/Web/Privacy/Privacy_sandbox/Partitioned_cookies. Two critical cookies - FedAuth, and rtFa - set by sharepoint.com had changed to include a "partition key" value. This meant that when sharepoint.com was framed on a page with a different domain, those cookies weren't being sent to the server. Today, those cookies are no longer being set with a "partition key", so it looks like Microsoft has rolled back that change.
CHIPS is not implemented in Firefox, hence why you didn't experience the issue in that browser.
- Thanks Greg, yep works again here too.
