Hey MEDAL-POLSKA
I have moved your post from the Polish forum since you've posted in English.
Since the same issue also occurs with other EA games, this may be related to the EA app or a background program rather than FC 26 itself.
Please try the following:
- Fully close Steam and the EA app, including their icons in the Windows system tray, and restart your laptop.
- Clear the EA app cache using EA app menu > Help > App Recovery > Clear cache.
- Make sure Windows, Steam, the EA app, and your graphics drivers are fully updated.
- Right-click the EA app and select Run as administrator, then try launching FC 26 again.
- Temporarily close overlays and background programs, especially third-party antivirus tools, VPNs, hardware-monitoring software, and controller-mapping applications.
- Add EADesktop.exe, EALauncher.exe, and EABackgroundService.exe to your antivirus and firewall allow lists.
- Reinstall EA Javelin anticheat for FC 26 using EAAntiCheat.Installer.exe in the C:\Program Files\EA\AC folder.
Please also check whether the EA app displays an error after the anticheat window closes. If the problem continues, attach a DxDiag report