If a game restarts or updates in the background, Cheat Engine loses track of it. Click the (top-left corner of Cheat Engine). Select the Processes tab. Find your game's executable file (e.g., game.exe ).
90% of users solve this error by adjusting a single checkbox before scanning.
You generally cannot ignore this error—it stops the scanning process entirely. The error must be resolved before you can successfully scan memory.
Windows Data Execution Prevention (DEP) can sometimes kill Thread 0 if it thinks Cheat Engine is executing malicious code in a protected memory space. If a game restarts or updates in the
Troubleshooting Cheat Engine : Fixing the "Scan Error: Thread 0" Bug
Use Cheat Engine's built-in stealth features , such as renaming the process and hiding the window, or using the "Hidden" option in the settings menu. 2. Run in Kernel Driver Mode
Using Cheat Engine in online multiplayer games is a high-risk activity. Anti-cheat systems are designed to detect such tools, and using them often violates a game's Terms of Service (ToS). The consequence of being caught can be severe and permanent. from the game and even associated platforms like Steam [8†L8-L14]. Always be aware of these risks before using Cheat Engine or any other memory modification tool in an online environment. Find your game's executable file (e
To help pinpoint the exact workaround for your situation, tell me: What are you trying to scan? Are you playing the game online or offline ? Which version of Cheat Engine are you currently running?
Modern multiplayer games and even some single-player titles deploy anti-cheat mechanisms (like Easy Anti-Cheat, BattlEye, or custom integrity checks). These patches intentionally block external tools from opening handle permissions ( PROCESS_VM_READ or PROCESS_ALL_ACCESS ).
The error occurs when Cheat Engine tries to scan memory addresses but receives no valid input or access permissions. The most common triggers include: The error must be resolved before you can
He closed Cheat Engine. The game resumed normally. His character stood still in a meadow, birds chirping, wind through pixelated trees.
Cheat Engine creates temporary files during a scan. If it lacks permission to write to its default folder, you will see a scan error.