Plugin or script hook interference
Even if you visually see a number like "100" in the Value box, a UI bug or an accidental space can cause the program to read it as blank. Click inside the input box. Delete any invisible spaces or existing text entirely.
This is the most common reason for this error. When you start Cheat Engine and select a process, it's ready to search for a specific piece of data. If you try to start a scan without giving it any search parameters, it will immediately fail. You need to tell it what to look for [11†L3]. Plugin or script hook interference Even if you
: After performing a "New Scan" to clear previous results, the value box is sometimes cleared automatically, leading to an accidental empty scan attempt. Resolution and Technical Significance Resolving this error is straightforward: the user must enter a value
If your Scan Type accidentally changed, Cheat Engine might be looking for two numbers instead of one. This is the most common reason for this error
"Scan Error: Thread 0 – Please fill something in 100"
Elias tried to Alt-F4, but his keyboard was dead. He reached for the power button on the tower, but a static shock threw his hand back. You need to tell it what to look for [11†L3]
: If your Scan Type is set to "Exact Value," the value box cannot be blank. If you want to scan for unknown changes, switch the Scan Type dropdown to Unknown initial value before starting. 3. Adjust the Thread Priority and Settings
Alternatively, close Cheat Engine entirely, press Win + R , type %temp% , and delete any temporary files associated with Cheat Engine. 4. Adjust Memory Scan Settings
Reattach Cheat Engine to your game and attempt the scan again. 3. Attach to the Correct Process