3720980 - "Authentication Information" popup or Space/Page ID errors in Fiori Launchpad when switching tabs in Microsoft Edge

Users working with the SAP Fiori Launchpad in Microsoft Edge experience the following:

• Native Browser Popup: A "Login" or "Authentication Information" (Authentifizierungsinformationen) window appears unexpectedly when a user returns to a previously inactive Fiori tab.
• Navigation Failure: After the popup, the Launchpad fails to load its layout, showing "Resource not found" or errors related to Space IDs and Page IDs (e.g., MyHome or custom Spaces show a loading spinner indefinitely).
• Visual Indicators: The UI may display a "Circle with a Slash" (🚫) / "Do Not Enter" icon on tiles or as a cursor, indicating that background OData requests are being blocked or are unauthorized.
• Empty SU53: If the user checks transaction SU53 in the backend, no authorization failures are recorded.
• Time Variance: The issue occurs even if the system's session_timeout is set to 1 hour, sometimes appearing after only 5-10 minutes of tab inactivity.
• Console Logs: Developer tools show multiple 403 Forbidden or 401 Unauthorized errors for services like /sap/opu/odata4/iwngw/notification_srv.

SAP S/4HANA 2022 and others.

SAP Fiori Launchpad, Authentication Information popup, Microsoft Edge Sleeping Tabs, Space ID error, Page ID error, Fiori 401 Unauthorized, Circle with slash Fiori, Do not enter icon Fiori, MyHome not loading, Efficiency Mode SAP, Fiori tab switching error, Authentifizierungsinformationen Fiori, CA-FLP-ABA, ServiceNow 261901/2026, Fiori 🚫 icon, sap-ushell-next-navmode explace , KBA , CA-FLP-ABA , SAP Fiori Launchpad ABAP Services , Problem