Ensure you're running the latest version of Cheat Engine. You can check for updates by following these steps:
Make sure you've selected the appropriate value type and scan type for your scan. Cheat Engine offers various types of scans (exact, greater, smaller, etc.) and value types (integer, float, string, etc.).
The error occurs because the "" dropdown menu in Cheat Engine is set to "Exact Value" (which is the default setting) but the " Value " text box is empty. By leaving the value blank and clicking "First Scan," you're essentially telling Cheat Engine to search for nothing, which is an invalid command.
Modern games often incorporate sophisticated anti-cheat systems. Here's why they cause scan errors and how to handle them: Ensure you're running the latest version of Cheat Engine
The error "scan error thread 0 please fill something in 100 new" often appears in slightly different variations across different Cheat Engine versions and contexts. Some users report seeing:
The error is also notably common when users are attempting to create Auto Assembler (AA) scripts or AoB (Array of Bytes) scans for game modifications. As one community member described: "I am so new to Cheat Engine yet I like to make one hit kill scripts because I love computer games. But some game always show 'Error while scanning for AOB's:1hk Error: thread 0: Please fill something in (100)'."
Here is a proper guide to diagnosing and fixing this error. The error occurs because the "" dropdown menu
Fixing Cheat Engine "Scan Error: Thread 0" – A Complete Troubleshooting Guide
Some games (EAC, BattlEye, Vanguard) actively block Cheat Engine. When they do, they can force CE to report an “empty value” error because read/write calls return null.
If you are using Cheat Engine to modify game variables, you might eventually encounter a frustrating, cryptic error message: or a prompt asking you to "Please fill something in" when attempting to scan for new values. These errors often appear together, indicating that the scanner has failed to start or failed to complete a thread, resulting in a 0-result scan. Here's why they cause scan errors and how
Users copying code from forums often miss crucial lines, leaving the script empty.
As mentioned on the Cheat Engine forums, ensure the system has ample free disk space, as massive scans can fail if the temp storage is filled.
: Close CE completely. Right-click the Cheat Engine shortcut and select Run as Administrator .