mati5000 Did you by chance install the windows out of band update for Domain controllers recently?
https://support.microsoft.com/en-us/topic/march-22-2024-kb5037422-os-build-20348-2342-out-of-band-e8f5bf56-c7cb-4051-bd5c-cc35963b18f3
Published Mar 27, 2024
Version 1.0