TYPO3 relies on HTTP referrers for security reasons in the backend. It seems your browser refused to send this information.
19.01.2026 - Downtime TYPO3 Backend
On 19.01.2026 at 16:00 CET we need to lock the TYPO3 Backend for Editors.
We will unlock the Backend on 20.01.2024 at 12:00 CET after the Update is done.
Date2025-12-17