Fixing Cheat Engine "Scan error: thread 0: Please fill something in"
The “Thread 0: Please fill something in 100 new” error is almost always caused by an empty or invalid memory range in Cheat Engine’s scan configuration. Resetting scan parameters or clearing the CE configuration file resolves the issue in over 90% of cases. If the problem persists, consider switching to an older stable version (e.g., CE 7.3) or using a virtual machine for the target process.
Without elevated permissions, the Windows kernel prevents software tools from attaching to external memory spaces. Fixing Cheat Engine "Scan error: thread 0: Please
: The "Value" input box is completely blank, or contain invalid characters (like letters in a 4-Byte decimal scan).
By typing any valid value into the search box—even a temporary placeholder like 0 —the error disappears immediately. For the “100% new” scan variation, the same rule applies: always populate the value field before clicking “New Scan” or “First Scan.” For the “100% new” scan variation, the same
Follow these standard configurations to resolve memory thread crashes and parsing errors. Fix 1: Adjust Memory Scan Settings (The Directory Fix)
Cheat Engine :: View topic - Scan error:thread 0:access violation? ... Scan error:thread 0:access violation? ... How do I cheat? . Cheat Engine threads will fail immediately.
Cheat Engine is trying to scan memory, but it doesn’t know what to scan for because the “Value” box is blank, or the value type is incompatible.
Highlight the value box and press Ctrl+A (Select All), then Delete . Type your value again manually—do not paste from an external source.
Cheat Engine needs deep access to your system to read other programs' memory. If it lacks these permissions, threads will fail immediately.