The official Cheat Engine tutorial has a known issue where step 3 instructs users to select "Unknown initial value" but doesn't mention that the Value box still contains "100" from the previous step, leading to this exact error.

Ensure you are selecting the , not the launcher or a background "helper" process. Addressing "100% Patched"

How to Fix Cheat Engine "Scan Error: Thread 0 Please Fill Something In"

Older versions of Cheat Engine (pre-7.4) had bugs in multithreaded scanning that could trigger spurious "please fill something in" errors even when settings were correct.

If you want to troubleshoot a specific game or setup, let me know: What are you trying to scan? Is it a multiplayer or single-player game? Which version of Cheat Engine are you currently running?

: Ensure the "Value" text box explicitly holds the numbers or strings you want to find.

Happy modding (legally).

If a game has been fully patched against Cheat Engine, standard scanning will always fail. In these cases:

Modern games like VALORANT (Vanguard), Escape from Tarkov (BattleEye), Fortnite (EasyAntiCheat), and Call of Duty (Ricochet) run at kernel-level (Ring 0). They actively detect Cheat Engine’s scanning attempts and deliberately corrupt the scan results, returning the "100 patched" error as a form of digital middle finger.

The GitHub repository "cheat-engine-undetectable" offers a modified version of Cheat Engine designed to be undetected, with kernel debugging features added.

Did you select the game process after the latest patch? VEH Debugger: Is the VEH debugger enabled in settings?