Anonymouse user Authentication Required message box appear

[C Edwards]

Hi All,

I'm trying to Share an Office 365 Group SharePoint site with an anonymous user with a Gmail email account.

When they access the site they keep getting Authentication Required message box appear. View attached screenshots below.

I hope you can help

[#2]

He should be able to just cancel this prompt. It's an unfortunate bug that should have been fixed long ago, but it still seems to happen occasionally. Still, it should not prevent the user from accessing shared resources.