Troubleshooting Cheat Engine : Fixing the "Scan Error: Thread 0" Bug
If you have tried all the steps above and still get the Thread 0 error, the game might have implemented or Advanced Memory Encryption in its latest patch.
When you scan for a value in Cheat Engine, it creates threads to analyze the game’s memory. refers to the primary thread handling the scan. Troubleshooting Cheat Engine : Fixing the "Scan Error:
: "100 patched" may indicate that the game you're trying to modify has been updated or "patched" to resist memory scanning. Many modern games, especially online ones, implement anti-cheat mechanisms that interfere with Cheat Engine's scanning threads. This can cause the software to receive an "Access violation (100)" error, as seen with Dragon Quest XI where scanning after a crackfix patch triggered thread 3 access violation errors.
Many modern games use a launcher (like Epic Games, Origin, or a custom indie launcher) that spawns a separate executable for the actual game. If you attach Cheat Engine to the launcher, the scan will fail with a Thread 0 error. Open your game and load into the actual gameplay. Alt-Tab out and open Cheat Engine. Click the (Select Process). Go to the Processes tab instead of the Applications tab. : "100 patched" may indicate that the game
If you’re looking for a or solution related to that error message:
Running a 32-bit version of Cheat Engine ( cheatengine-i386.exe ) against a modern 64-bit game process will trigger thread access violations. Many modern games use a launcher (like Epic
: Ensure you are running the Cheat Engine executable with full administrative privileges.
Scan error:thread 0:Please fill something in 100 - Cheat Engine
Accept the patch. The "100 patched" error is a clean, non-crashing way for the game to say: "No memory access for you." Attempting further bypasses violates terms of service and risks account or hardware bans.