Since 1/2 months (in 2025), when i start the game and the -noLauncher is set as startup argument. I got the Warning Message: Addon 'A3_Language_F_Contact' requires addon 'A3_Data_F_Contact'. I'am not able to join any multiplayer server too.

That result we some errors in the RPT file :

11:39:31 Warning Message: Addon 'A3_Language_F_Contact' requires addon 'A3_Data_F_Contact'
11:39:53 Warning Message: Addon 'A3_Language_F_Contact' requires addon 'A3_Data_F_Contact'
11:39:53 Warning Message: Addon 'A3_LanguageMissions_F_Contact' requires addon 'A3_Data_F_Contact'
11:39:53 Warning Message: Addon 'A3_LanguageMissions_F_Contact' requires addon 'A3_Data_F_Contact'
11:39:57 Warning Message: Picture \a3\data_f_warlords\logos\arma3_warlords_logo_ca.paa not found

22:28:20 Warning Message: Files "G:\SteamLibrary\steamapps\common\Arma 3\Contact\addons\languagemissions_f_contact.pbo", "G:\SteamLibrary\steamapps\common\Arma 3\Contact\addons\language_f_contact.pbo" are not signed by a key accepted by this server. To play on this server, remove listed files or install additional accepted keys.

I'am using the Profiling branch but that the same behavior on main branch.

The issue still persist in 2026 and the -noLauncher argument is removed by the launcher itself.

I try to reinstall the game (without cache), check the integrity but that change nothing.

The Windows 10 LTSC installation is mainly dedicated for Arma and the issue occur few years after the initial installation of the game and the system.