What It Means & How to Fix It in UE5

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🧠 Why You’re Seeing This Error

This error happens when Unreal Engine tries to build your project (usually in Editor mode) but can’t find the matching .Target.cs file for the editor build.

It’s often triggered by:

• A missing or misnamed YourGameEditor.Target.cs file
• A mismatch between the .uproject name and the class name in the target file
• You renamed your project but didn’t rename the editor target file
• You generated the project files before creating the required targets

TL;DR: Unreal wants to build the editor, but it doesn’t know how — because the instructions (target file) are missing or broken.

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💥 Example Error Message

UnrealBuildTool: ERROR: Target 'MyGameEditor' not found.

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🛠️ What Usually Causes This

❌ Missing MyGameEditor.Target.cs in Source/

Source/
  MyGameEditor.Target.cs // ❌ Not there = error

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❌ Wrong Class Name or File Name

If the file exists, but the class name inside doesn’t match the expected format, it won’t work.

// ❌ Wrong class name
public class MyEditorTarget : TargetRules { }

UE5 expects:

public class MyGameEditorTarget : TargetRules { } // ✅ Must match file and project name

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❌ Target File Exists, But You Haven’t Regenerated VS Project Files

Unreal won’t detect new or renamed target files until you regenerate project files.

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✅ How to Fix It – Step-by-Step

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✔️ 1. Create the Missing Target File (If It Doesn’t Exist)

Inside your Source/ folder, create:

MyGameEditor.Target.cs

With this content (replace MyGame with your project name):

public class MyGameEditorTarget : TargetRules
{
    public MyGameEditorTarget(TargetInfo Target) : base(Target)
    {
        Type = TargetType.Editor;
        DefaultBuildSettings = BuildSettingsVersion.V2;
        ExtraModuleNames.Add("MyGame");
    }
}

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✔️ 2. Make Sure the File Name and Class Name Match Your .uproject

If your project is AwesomeShooter.uproject, you need:

• AwesomeShooterEditor.Target.cs
• public class AwesomeShooterEditorTarget : TargetRules

Everything must match exactly, including casing.

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✔️ 3. Regenerate Visual Studio Project Files

Once the file exists and is correct:

• Right-click your .uproject
• Click “Generate Visual Studio project files”
• Reopen your solution and rebuild

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✔️ 4. Optional: Also Check for Game Target

If your editor target is missing, your game target might be too. Make sure both exist:

plaintextCopyEditMyGame.Target.cs
MyGameEditor.Target.cs

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✅ Summary: How to Fix “Target ‘MyGameEditor’ Not Found” in UE5

Cause	Fix
Missing or misnamed target file	Create MyGameEditor.Target.cs with the correct class name
File name doesn’t match class name	Class should be MyGameEditorTarget inside matching file
Renamed project without updating	Update file and class names to match new project name
Project files not regenerated	Right-click .uproject → Generate project files again