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ModuleManager: Module 'OnlineSubsystemNull' not found

I had set up a blueprint project where I was successfully using OnlineSubsystemNull. After adding an empty c++ class to the project I cannot create sessions anymore, and in the logs I see the following error:

 LogModuleManager:Warning: ModuleManager: Module 'OnlineSubsystemNull' not found - its StaticallyLinkedModuleInitializers function is null.

I have modified DefaultEngine.ini to include:


And PROJECTNAME.Build.cs as follow:

// Fill out your copyright notice in the Description page of Project Settings.

using UnrealBuildTool;

 public class Test2 : ModuleRules
     public Test2(TargetInfo Target)
         PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "OnlineSubsystem", "OnlineSubsystemNull"});
         PrivateDependencyModuleNames.AddRange(new string[] {  });

The module gets compiled:

 MainFrameActions: Packaging (Mac): mono: [43/179] Compile Module.OnlineSubsystemNull.cpp

But apparently not linked to the executable. Am I missing something?

Product Version: Not Selected
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asked Apr 25 '15 at 09:21 PM in C++ Programming

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avatar image devel.bmad Apr 25 '15 at 11:21 PM
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1 answer: sort voted first

It looks like it could be related to the bug I mentioned on the related forum thread (UE-13075). You can try using the "Refresh Xcode project" from the Unreal Editor's File menu before re-launching or re-packaging your project.

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answered Apr 27 '15 at 06:16 PM

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Ryan Gerleve STAFF
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avatar image devel.bmad Apr 28 '15 at 12:17 AM

Refreshing Xcode project didn't seem to fix the issue, probably I was not configuring the build.cs file correctly. This worked for me:

     PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "OnlineSubsystem"});
     PrivateDependencyModuleNames.AddRange(new string[] { "OnlineSubsystem", "OnlineSubsystemNull" });
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