Sometimes Cheat Engine’s internal settings for how it handles threads can get bugged. Go to . Click on Scan Settings . Ensure "Wait for threads to finish" is checked.
The error literally says This often happens if you accidentally hit "First Scan" or "Next Scan" while the value box is empty or contains invalid characters (like a letter when searching for an Integer). Ensure there is a number in the Value box. Sometimes Cheat Engine’s internal settings for how it
Modern antivirus programs (and Windows Defender) hate Cheat Engine because it behaves like a "Trojan" by modifying other programs. Go to . Select Manage settings and then Exclusions . Ensure "Wait for threads to finish" is checked
Click the (Select Process) in the top left corner. Find your game in the "Applications" or "Processes" tab. Click Open . Modern antivirus programs (and Windows Defender) hate Cheat
You’ve left a value field blank or selected a scan type that isn't supported for that value. 1. Re-attach the Process (The "Quick Fix")
Your security software is blocking the memory scan.
Cheat Engine works by "injecting" itself into another program's memory. Windows views this as suspicious behavior unless the program has elevated privileges. Close Cheat Engine and your game. Right-click the . Select Run as Administrator . Launch your game and try the scan again. 3. Check for "Empty" Scan Values