Angular + .NET (Azure AD BFF): Handling 401 due to token expiry without losing unsaved form data (auto-save to DB only)
Summary This incident centers on 401 Unauthorized responses caused by Azure AD cookie expiration in an Angular + .NET BFF architecture. Because the frontend stores no tokens locally and the session cookie silently expires, long‑running form sessions lead to data loss when auto‑save or submit calls fail. The user is redirected before the backend can … Read more