Just go to the AntiCheat folder that is in EA FC26 Installer folder , uninstall it .... then install it back ... reboot system and start the EAApp as administrator... it worked for me and even the game works better after doing this...
how to reboot system ?
If it's a console trun off and back on ... I play on PC .... for me it worked perfectly ... be aware as well if something is not blocking the access from the security side.
Just go to Program files \ EA Games \ FC26 game folder \ Installer\ then start the anticheat.exe ... select FC26 , uninstall ... wait 10 seconds , select back FC26 ...press install , close tab ... and after that restart the system .... go to the EA App but when you open it .. right click and run as administrator
