[2023] probleme with the up date, i have no idea what appen

That's pretty clearly a Steam or Windows problem, as mentioned above. Does a simple reboot get past it?  

Please do a full **clean** re-install:

- move any valued save games elsewhere
- "uninstall" in Steam-CK3
- unsubscribe from ALL mods in the Steam workshop for this game
- manually delete both the Steam/SteamApps/common/CK3 AND Documents/Paradox Interactive/CK3 folders - In particular make sure there are no files or folders left under either the Steam CK3 or Documents CK3 locations, before installing again.
- re-install game in Steam, run a Steam Verify when done.
- add CK3.exe to the exceptions list of your antivirus app; ESPECIALLY if you have Windows Defender, add it to the Ransomware "Apps Allowed Through" list.
- start the game with no mods active and test

Doe sit work okay now? If so you can then start subscribing to mods again, but ONLY ones that have been updated to work with the 1.9 patches.  

wolfFRdu64 said: going to report that to steam, because even them couldn't help me

Steam cannot be expected to help with specific game problems, only with their accounts or client. They can hardly be across all possible problems for the thousands of games they host!