Let’s decode the error message piece by piece:
In plain English: 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.
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.
Appendix – User Workaround Example
“I set Start = 00400000, Stop = 7FFFFFFF, unchecked ‘Skip PAGE_GUARD’, and scanned with ‘Value Type’ = Byte. Error gone.” – CE Forum User
If none of the above solutions work, try resetting Cheat Engine settings to their default values: Let’s decode the error message piece by piece:
Conclusion
The "Cheat Engine Scan Error: Thread 0, Please Fill Something In" error can be frustrating, but it's usually resolvable by updating Cheat Engine, verifying scan settings, disabling anti-debugging mechanisms, configuring system settings, or resetting Cheat Engine settings. By following these steps, you should be able to resolve the error and continue using Cheat Engine to analyze and modify game memory.
New Solutions (100% Working)
Some users have reported success with the following additional solutions:
The "Scan error: thread 0: Please fill something in 100" typically occurs when a user attempts a scan without providing a valid input value in the scan field. Common Fixes for Scan Error Thread 0 In plain English: Cheat Engine is trying to
Input a Value: Ensure the "Value" box in the main Cheat Engine window is not empty before clicking First Scan or Next Scan.
Check Process Attachment: Verify that Cheat Engine is correctly attached to the target game process by clicking the PC icon and selecting the active executable. Scan Settings Adjustment:
Enable MEM_MAPPED: Go to Settings > Scan Settings and ensure MEM_MAPPED is checked.
Verify Scan Ranges: Ensure the "From" and "To" memory addresses are set to the default range (usually 00400000 to 7FFFFFFF).
Administrative Privileges: Always run Cheat Engine as an Administrator to ensure it has the necessary permissions to read the game's memory. The “Thread 0: Please fill something in 100
Security Software Conflict: Antivirus or firewall software (like Comodo) can block CE threads; try adding an exception or temporarily disabling the software. Troubleshooting Scan Failures (0 Results)
If your scan completes but returns 0 results, consider these alternatives:
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