You must use an EAC bypass. This often involves replacing the EasyAntiCheat_x64.dll and rungame.exe files in your game directory with modified "bypass" versions.
Trainers use "memory-editing" techniques that often look like malicious activity to antivirus programs. wildlands trainer fling fix
If the trainer doesn't have permission to write to the game's process, it won't work even if it says "Activated". Tom Clancy's Ghost Recon® Wildlands - Steam Community You must use an EAC bypass
Disable or your third-party antivirus temporarily while running the trainer. If the trainer doesn't have permission to write
Some users suggest using the WeMod App, which often includes a built-in launcher to automatically bypass EAC when you click "Play". 2. Whitelist in Antivirus (False Positives)
Add an exception (whitelist) for the folder where you keep the trainer and the game’s main .exe file. 3. Run with Administrator Privileges