is a specific validation alert that occurs when a user attempts to execute a scan without providing a search criteria
The phrase simply means the primary scanning process encountered a problem immediately.
Body: Seeing "Scan Error Thread 0: Please Fill Something In 100" pop up during a Cheat Engine scan is frustrating but fixable. This error often means the scanner thread received invalid input or an unexpected memory query failed. Try these quick checks:
Cheat Engine uses multiple threads to scan memory faster. is the primary scanning thread. If it fails, the entire scan process stops.
Memory access/permission issue misreported as missing input is a specific validation alert that occurs when
: Scanning for common values (like 0 or "unknown initial value") can generate massive temporary files. If your drive has less than 500MB to 20GB free, the scan will fail.
Many modern games use anti-cheat software (like VAC or Easy Anti-Cheat) that explicitly blocks Cheat Engine from attaching to the game process.
In Cheat Engine, a "thread" is a process tasked with scanning game memory. When you see "Thread 0: Please fill something in," it generally means the Cheat Engine scanner expected a value, address, or condition to be set in the scan parameters, but found nothing or a null value [1].
Are you trying to find a (like gold) or a bar (like health)? I can give you a specific step-by-step for that game. How To Edit Any Stat In Millennia / Cheat Engine Tutorial Try these quick checks: Cheat Engine uses multiple
If you want to scan for an unknown initial value (e.g., health bar with no number):
Here's a detailed breakdown of why this error happens, why the number "100" often appears, and other related issues you might run into.
If you filled something into the box but the error persists, your configuration settings might be corrupted or incompatible with the application you are inspecting. Adjust Scan Buffer Settings
The error typically occurs when Cheat Engine attempts to perform a scan but the search value field is empty or contains invalid characters for the selected Value Type . Common Causes & Fixes If the error persists
If none of the above fixes work:
By default, Cheat Engine might not scan certain types of memory, such as memory-mapped files, which some games use to store variables. Step-by-Step Solutions to Fix the Error 1. Run as Administrator
The "(100)" in the error message is not part of the error code itself. It appears because and many games. When a user runs into the error, the number 100 is often the last value they had in the "Value" box from a previous action.
If the error persists, particularly if you're seeing it in conjunction with "Access Violation" messages after the "Please Fill Something In" error is resolved, you may need to tweak CE's scan settings.