SharePoint Online Dumps OTP Authentication for Sharing Links

Entra ID B2B Collaboratio n and SharePoint Online Sharing Links

After July 1, 2025, any sharing links generated with one-time passcodes (OTP) will stop working. Only links based on Entra ID B2B Collaboration will work. Users who lose access to content shared from SharePoint Online or OneDrive for Business will have to contact the original sharer to ask them to generate a new sharing link. Sounds like a recipe for confusion, which is what might happen.

SharePoint Online Embraces Entra ID B2B Collaboration for External Sharing

In October 2021, Microsoft will enable the Azure AD email one-time passcode identity provider in tenants. SharePoint Online and OneDrive for Business will use the provider to control access for external people to its resources. The net effect is that Azure AD will create guest accounts for external sharing recipients. Even though guest accounts need to be managed, there’s lots of good reasons to use guest accounts, as we describe here.