Here is a comprehensive guide to understanding why this error happens and how to bypass it. Why Does This Error Occur?
Windows prevents standard user programs from altering the memory of other running applications to maintain system security. Close Cheat Engine completely. Right-click the Cheat Engine shortcut or executable file. Select . Re-open your game and attach Cheat Engine to the process. 3. Check for Anti-Cheat Software
Windows prevents standard user applications from hooking into the memory loops of other running programs. Close Cheat Engine completely. Here is a comprehensive guide to understanding why
If the game was recently updated and your old cheats no longer work, the memory addresses have likely shifted.
The error often includes a thread number—most commonly thread 0, but also threads 1, 2, 3, or 4: Close Cheat Engine completely
This comprehensive troubleshooting guide breaks down why this error occurs, how it relates to game patches, and the definitive steps to resolve it. Understanding the Error Breakdown
: If you're on a modern PC, use cheatengine-x86_64.exe instead of the 32-bit version to avoid compatibility issues. Re-open your game and attach Cheat Engine to the process
Go to the Memory Scan Options panel. Ensure your From: and To: memory addresses are set to standard defaults (usually 00400000 to 7FFFFFFF for 32-bit or proper 64-bit boundaries). If your boundaries are too wide, Thread 0 will try to read protected system space and crash. 2. Adjust Cheat Engine Scan Settings
The error is a crossroads. On one side lies a simple configuration mistake—no process selected, empty value field, or too many scan threads. On the other side lies a hardened anti-cheat system that has successfully patched the very APIs Cheat Engine relies on.
If you leave the "Value" field blank while performing an "Exact Value" scan, CE doesn't know what to search for. The prompt "please fill something in" is literal: you haven't entered a value to scan.