SharePoint Online Dumps OTP Authentication for 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.