If you left Cheat Engine open while restarting your game, the "Process ID" has changed. Click the (Select Process) in the top left. Go to the "Processes" tab. Re-select the game's executable (.exe). Try your scan again. 3. Check Your Antivirus / Windows Defender
The most frequent cause is insufficient permissions. If Cheat Engine is not run as an administrator, it cannot read the memory of protected processes, resulting in a thread error. Process Misattachment: If you left Cheat Engine open while restarting