Yes, I had this issue for 2 days but found a fix. Game is working now.
Steps:
1) Uninstall FC26.
2) Uninstall EA Anti-Cheat:
- Open the EA Sports folder, go into the AC (AntiCheat) folder.
- Run the installer .exe as Administrator and choose Uninstall.
3) Uninstall EA App.
4) Kill leftover processes (run Windows Terminal as Admin):
taskkill /IM EADesktop.exe /F 2>$null
taskkill /IM EALaunchHelper.exe /F 2>$null
taskkill /IM EABackgroundService.exe /F 2>$null
5) Delete leftover folders (safe cache/config):
rmdir /s /q "C:\Program Files\Electronic Arts\EA Desktop"
rmdir /s /q "C:\ProgramData\Electronic Arts\EA Services"
rmdir /s /q "%LOCALAPPDATA%\Electronic Arts"
rmdir /s /q "%APPDATA%\Electronic Arts"
6) (PowerShell) Remove stale firewall rules:
Get-NetFirewallRule | ? DisplayName -match "EA.*(Anti|Javelin).*Cheat" | Remove-NetFirewallRule
7) Reboot.
8) Reinstall EA App and sign in.
9) Reinstall FC26 via Steam.
10) Launch FC26 from Steam once as Administrator. When the firewall prompt appears, click Allow.
11) In Windows Security > Firewall > Allow an app, confirm “EAJavelin Anti-Cheat” is allowed on Private and Public.
This is what finally worked for me; the longest part is just the reinstall.