Quelltext der Seite Outlook fragt immer nach Passwort

Hier erste einmal eine Linksammlung dazu, geholfen hat bisher nichts:
* https://www.borncity.com/blog/2025/06/28/outlook-classic-problem-verlangt-einen-dienst-hinzufuegen-juni-2025/
* https://www.frankysweb.de/outlook-autodiscover-fuer-office-365-deaktivieren/
* https://microsoft.github.io/CSS-Exchange/Security/ExchangeExtendedProtectionManagement/
* https://learn.microsoft.com/de-de/exchange/plan-and-deploy/post-installation-tasks/security-best-practices/exchange-extended-protection
* https://support.intermedia.com/app/articles/detail/a_id/15813/~/how-to-fix-the-credential-prompt-error-in-outlook-2016%2F2019%2Fo365-desktop-client#:~:text=If%20Outlook%20keeps%20prompting%20for,the%20Persistence%20parameter%20is%20Enterprise.
* https://it-service-ruhr.de/outlook-kennwortabfrage/
* https://learn.microsoft.com/de-de/answers/questions/4514357/microsoft-outlook-2016-nach-office-update-erschein?page=1#answer-8756447
* https://www.borncity.com/blog/2025/02/28/outlook-problem-staendige-passwortabfragen-oder-verbindung-scheitert-feb-2025/