# \#linker-error **URL:** https://forums.unrealengine.com/tag/linker-error/4704.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [\[SOLVED\]LNK2019/2001 errors with Gameplay Tags used across custom modules](https://forums.unrealengine.com/t/solved-lnk2019-2001-errors-with-gameplay-tags-used-across-custom-modules/2520122)
**Author:** [@G1ntokiSakata](https://forums.unrealengine.com/u/G1ntokiSakata)\ **Replies:** 2\ **Last updated:** [February 19, 2026, 6:15am UTC](https://forums.unrealengine.com/t/solved-lnk2019-2001-errors-with-gameplay-tags-used-across-custom-modules/2520122 "2026-02-19T06:15:11Z")
Update: found solution For LNK2019 In Modules.Build.cs add GameplayTags to the PublicDependencyModuleNames Modules.Build.cs // Copyright Epic Games, Inc. All Rights Reserved. using UnrealBuildTool; public class Modu… --- ## [IPluginManager::Get() Linker error - Not finding implementation](https://forums.unrealengine.com/t/ipluginmanager-get-linker-error-not-finding-implementation/414313)
**Author:** [@darkgaze](https://forums.unrealengine.com/u/darkgaze)\ **Replies:** 6\ **Last updated:** [June 23, 2025, 3:58pm UTC](https://forums.unrealengine.com/t/ipluginmanager-get-linker-error-not-finding-implementation/414313 "2025-06-23T15:58:08Z")
This is code that’s currently compiling inside a plugin I installed on the engine (so it’s on the engine’s folders). My file is inside my project folder, instead, under plugin/… The file is a cpp file that includes the… --- ## [Link errors when creating new node types](https://forums.unrealengine.com/t/link-errors-when-creating-new-node-types/1940514)
**Author:** [@AlbertMadrenys](https://forums.unrealengine.com/u/AlbertMadrenys)\ **Replies:** 10\ **Last updated:** [May 15, 2025, 3:47pm UTC](https://forums.unrealengine.com/t/link-errors-when-creating-new-node-types/1940514 "2025-05-15T15:47:45Z")
Hi everyone, I’m trying to create my own pin type for the vertex interface of my node. For now, I’m just trying to implement a basic new pin with TCHAR, just to make sure that everything works with a simple type. I am … --- ## [Resolved : LNK2001 Error ("unresolved external symbol GInternalProjectName") Due to Module Naming Issue in a Plugin Project](https://forums.unrealengine.com/t/resolved-lnk2001-error-unresolved-external-symbol-ginternalprojectname-due-to-module-naming-issue-in-a-plugin-project/2389629)
**Author:** [@koromire1](https://forums.unrealengine.com/u/koromire1)\ **Replies:** 0\ **Last updated:** [March 14, 2025, 12:15pm UTC](https://forums.unrealengine.com/t/resolved-lnk2001-error-unresolved-external-symbol-ginternalprojectname-due-to-module-naming-issue-in-a-plugin-project/2389629 "2025-03-14T12:15:26Z")
Hi everyone, I wanted to share the solution to a rather tricky packaging error I encountered when developing an Unreal Engine plugin. I was receiving several linker errors during packaging (for Windows) such as: UATHel… --- ## [LNK2019/1120 error when using FMoveCursor::Cardinal or ViaScreenPointer static function](https://forums.unrealengine.com/t/lnk2019-1120-error-when-using-fmovecursor-cardinal-or-viascreenpointer-static-function/1731480)
**Author:** [@shue\_it](https://forums.unrealengine.com/u/shue_it)\ **Replies:** 1\ **Last updated:** [March 6, 2025, 9:06pm UTC](https://forums.unrealengine.com/t/lnk2019-1120-error-when-using-fmovecursor-cardinal-or-viascreenpointer-static-function/1731480 "2025-03-06T21:06:14Z")
Hello there, I’m currently trying to implement a custom EditableText, and at one point I want to auto select the next character. After digging in the source code, I found the function MoveCursor of FSlateEditableTextLay… --- ## [Additional linker flags are ignored](https://forums.unrealengine.com/t/additional-linker-flags-are-ignored/447891)
**Author:** [@Tapocheck](https://forums.unrealengine.com/u/Tapocheck)\ **Replies:** 2\ **Last updated:** [November 25, 2024, 3:13am UTC](https://forums.unrealengine.com/t/additional-linker-flags-are-ignored/447891 "2024-11-25T03:13:38Z")
I have “-ObjC” flag in Additional Linker Flags (both - shipping and non-shipping). But it seems that it doesn’t affect anything. My game crashes. But when I open xcodeproj from Intermediate/ProjectFilesIOS, I see tha… --- ## [Link errors in UBTTaskNode classes](https://forums.unrealengine.com/t/link-errors-in-ubttasknode-classes/359394)
**Author:** [@Nevermore](https://forums.unrealengine.com/u/Nevermore)\ **Replies:** 19\ **Last updated:** [September 24, 2024, 5:29pm UTC](https://forums.unrealengine.com/t/link-errors-in-ubttasknode-classes/359394 "2024-09-24T17:29:55Z")
After converting my project to 4.12 I have link errors in 2 of my UBTTaskNode classes: 2\>AllowNextMarker.cpp.obj : error LNK2001: unresolved external symbol "public: virtual void \_\_cdecl IGameplayTaskOwnerInterface::OnG… --- ## [2 duplicate symbols for architecture arm64](https://forums.unrealengine.com/t/2-duplicate-symbols-for-architecture-arm64/2034186)
**Author:** [@HarmanSingh999](https://forums.unrealengine.com/u/HarmanSingh999)\ **Replies:** 0\ **Last updated:** [September 23, 2024, 2:33pm UTC](https://forums.unrealengine.com/t/2-duplicate-symbols-for-architecture-arm64/2034186 "2024-09-23T14:33:24Z")
Hello everyone, Below mentioned error is occurring when I’m trying to package as IOS build. I’m using Unreal 4.27(Working on a premade game, they also used MSSR Plugin) and xcode 15.0.1 Before this I have solved variou… --- ## [How ro reduce .pdb file size when packaging project?](https://forums.unrealengine.com/t/how-ro-reduce-pdb-file-size-when-packaging-project/496016)
**Author:** [@zablas](https://forums.unrealengine.com/u/zablas)\ **Replies:** 2\ **Last updated:** [August 2, 2024, 7:10pm UTC](https://forums.unrealengine.com/t/how-ro-reduce-pdb-file-size-when-packaging-project/496016 "2024-08-02T19:10:40Z")
Hello. This is probably the closest forum category for this kind of question so I’ll ask it here. Basically, I have my project nativized and it has 1620 .cpp modules being generated during nativization. The problem is th… --- ## [Get Private Static Class Unresolved Symbol](https://forums.unrealengine.com/t/get-private-static-class-unresolved-symbol/1783804)
**Author:** [@444\_Nuits](https://forums.unrealengine.com/u/444_Nuits)\ **Replies:** 2\ **Last updated:** [April 3, 2024, 7:10am UTC](https://forums.unrealengine.com/t/get-private-static-class-unresolved-symbol/1783804 "2024-04-03T07:10:55Z")
Hiii, So I created a plugin in c++, this plugin has a component (header placed in its Public/ folder and source files placed in its Private/ folder) here’s the class : I’d like to create a component on an actor code… --- ## [UE5 crashing when opening any blueprint](https://forums.unrealengine.com/t/ue5-crashing-when-opening-any-blueprint/685140)
**Author:** [@thebenjiman](https://forums.unrealengine.com/u/thebenjiman)\ **Replies:** 9\ **Last updated:** [March 24, 2024, 2:13am UTC](https://forums.unrealengine.com/t/ue5-crashing-when-opening-any-blueprint/685140 "2024-03-24T02:13:48Z")
I’m still using using 4.27 for my project but have been trying to switch to UE5 as soon as the preview builds were proposed. Everytime I start opening a blueprint, regardless of it’s size or importance in the project, i… --- ## [Cannot implement "GenericTeamAgentInterface"](https://forums.unrealengine.com/t/cannot-implement-genericteamagentinterface/490683)
**Author:** [@Likkkez](https://forums.unrealengine.com/u/Likkkez)\ **Replies:** 5\ **Last updated:** [March 16, 2024, 6:29pm UTC](https://forums.unrealengine.com/t/cannot-implement-genericteamagentinterface/490683 "2024-03-16T18:29:27Z")
I’m trying to implement the TeamID variable for my character class so that the AIPerception stuff can detect the teams following this tutorial AI Perception in Unreal Engine 4 – How to Setup – Programming Tutorials Howe… --- ## [I'm Having Linker Errors when using LyraTeamStatics. What Module to Include When Using Lyra Project in C++?](https://forums.unrealengine.com/t/im-having-linker-errors-when-using-lyrateamstatics-what-module-to-include-when-using-lyra-project-in-c/1654470)
**Author:** [@MrSkittles00](https://forums.unrealengine.com/u/MrSkittles00)\ **Replies:** 2\ **Last updated:** [February 2, 2024, 10:51am UTC](https://forums.unrealengine.com/t/im-having-linker-errors-when-using-lyrateamstatics-what-module-to-include-when-using-lyra-project-in-c/1654470 "2024-02-02T10:51:41Z")
0\>Module.SampleGameRuntime.cpp.obj: Error : LNK2019: unresolved external symbol "public: static class ULyraTeamDisplayAsset \* \_\_cdecl ULyraTeamStatics::GetTeamDisplayAsset(class UObject const \*,int)" (?GetTeamDisplayAss… --- ## [Link error using GetVectorParameterByName in C++](https://forums.unrealengine.com/t/link-error-using-getvectorparameterbyname-in-c/287828)
**Author:** [@anonymous\_user\_2db7ca80](https://forums.unrealengine.com/u/anonymous_user_2db7ca80)\ **Replies:** 1\ **Last updated:** [January 28, 2024, 10:38am UTC](https://forums.unrealengine.com/t/link-error-using-getvectorparameterbyname-in-c/287828 "2024-01-28T10:38:51Z")
The following line of code is generating a link error: const FCollectionVectorParameter\* BoatPosParam = BoatPositionCollection-\>GetVectorParameterByName(TEXT("BoatBos")); Link error: error LNK2019: unresolved external… --- ## [How to add multiple entries in Additional Linker Flags?](https://forums.unrealengine.com/t/how-to-add-multiple-entries-in-additional-linker-flags/1584066)
**Author:** [@Ghepo1012](https://forums.unrealengine.com/u/Ghepo1012)\ **Replies:** 0\ **Last updated:** [January 3, 2024, 7:41am UTC](https://forums.unrealengine.com/t/how-to-add-multiple-entries-in-additional-linker-flags/1584066 "2024-01-03T07:41:36Z")
I am trying to add more than entry in Additional Linker Flags but I am unable to. I’ve tried separating them with “\\n” or “,” or “&” or “&&” or a space and nothing works. I keep getting an error when packaging for iOS. … --- ## [Adding C++ DLL to Unreal Engine](https://forums.unrealengine.com/t/adding-c-dll-to-unreal-engine/1527550)
**Author:** [@Jopanalegs](https://forums.unrealengine.com/u/Jopanalegs)\ **Replies:** 0\ **Last updated:** [December 15, 2023, 2:05pm UTC](https://forums.unrealengine.com/t/adding-c-dll-to-unreal-engine/1527550 "2023-12-15T14:05:38Z")
I am developing plugin, that uses my third-party dll. When I add C written dll, everything is okay, I had experience adding cJSON, libcurl - they written in C. When I tried using C++ DLL, like I created custom dll for x6… --- ## [How to deal with LNK2005 (redefinition) errors from third party libraries when using together?](https://forums.unrealengine.com/t/how-to-deal-with-lnk2005-redefinition-errors-from-third-party-libraries-when-using-together/1516723)
**Author:** [@lehuan5062](https://forums.unrealengine.com/u/lehuan5062)\ **Replies:** 2\ **Last updated:** [December 11, 2023, 12:08pm UTC](https://forums.unrealengine.com/t/how-to-deal-with-lnk2005-redefinition-errors-from-third-party-libraries-when-using-together/1516723 "2023-12-11T12:08:02Z")
I have plugin A and plugin B. Plugin A has gpr.lib and grpc.lib. Plugin B has firebase\_firestore.lib. If I only enable one of the plugins, I can package my project normally. If I enable both of the plugins, I can only us… --- ## [Critical Issue with UEFN engine, Null, String, Not Found](https://forums.unrealengine.com/t/critical-issue-with-uefn-engine-null-string-not-found/1361947)
**Author:** [@PledgedRanger](https://forums.unrealengine.com/u/PledgedRanger)\ **Replies:** 0\ **Last updated:** [November 4, 2023, 6:55am UTC](https://forums.unrealengine.com/t/critical-issue-with-uefn-engine-null-string-not-found/1361947 "2023-11-04T06:55:40Z")
Reference ID f6764ac0-4001-2f61-c9ff-01b087c30a64 Please select what you are reporting on: Unreal Editor for Fortnite What Type of Bug are you experiencing? Stability Summary Reference ID f6764ac0-4001-2f61-c9ff-01b08… --- ## [Can not link against FillArrayFromResponses engine function](https://forums.unrealengine.com/t/can-not-link-against-fillarrayfromresponses-engine-function/1348568)
**Author:** [@mclark4386](https://forums.unrealengine.com/u/mclark4386)\ **Replies:** 3\ **Last updated:** [November 2, 2023, 3:44am UTC](https://forums.unrealengine.com/t/can-not-link-against-fillarrayfromresponses-engine-function/1348568 "2023-11-02T03:44:40Z")
I have a 5.3.1 project with a editor plugin (but I’ve tried just adding this code to my core game module as well) I’m trying to make that I’m trying to build on a Mac and Windows. When I added the lines: auto container … --- ## [Undefined symbols for architecture x86\_64: "typeinfo for ACharacter", referenced from:](https://forums.unrealengine.com/t/undefined-symbols-for-architecture-x86-64-typeinfo-for-acharacter-referenced-from/1194690)
**Author:** [@Meganite\_game1](https://forums.unrealengine.com/u/Meganite_game1)\ **Replies:** 1\ **Last updated:** [October 27, 2023, 4:12pm UTC](https://forums.unrealengine.com/t/undefined-symbols-for-architecture-x86-64-typeinfo-for-acharacter-referenced-from/1194690 "2023-10-27T16:12:41Z")
Hello. I can’t compile my project on my mac. Linker gives the following error: Undefined symbols for architecture x86\_64: "typeinfo for ACharacter", referenced from: typeinfo for AWalkingPawn in Module.Construct… --- ## [Boost link error compiling Test](https://forums.unrealengine.com/t/boost-link-error-compiling-test/468300)
**Author:** [@acxsasx](https://forums.unrealengine.com/u/acxsasx)\ **Replies:** 1\ **Last updated:** [September 27, 2023, 4:03am UTC](https://forums.unrealengine.com/t/boost-link-error-compiling-test/468300 "2023-09-27T04:03:00Z")
Looking to use the performance tuning tools for the first time using https://www.unrealengine.com/en-US/b...pu-performance. Picked “Test” out of the solution configuration list. Using Boost just fine in Developer Edito… --- ## [Error LNK2001 unresolved external symbol when extending FoliageType class in C++](https://forums.unrealengine.com/t/error-lnk2001-unresolved-external-symbol-when-extending-foliagetype-class-in-c/445710)
**Author:** [@Nazruden](https://forums.unrealengine.com/u/Nazruden)\ **Replies:** 2\ **Last updated:** [September 19, 2023, 3:02pm UTC](https://forums.unrealengine.com/t/error-lnk2001-unresolved-external-symbol-when-extending-foliagetype-class-in-c/445710 "2023-09-19T15:02:38Z")
Hello everyone, I’ve been looking through the existing posts dealing with this kind of issues (Link errors and dependencies) but I didn’t find something about the specific issue i’m facing. I extended the FoliageType c… --- ## [LINK : fatal error LNK1181: cannot open file ..\\UE4-PerceptionNeuronRuntime.lib'](https://forums.unrealengine.com/t/link-fatal-error-lnk1181-cannot-open-file-ue4-perceptionneuronruntime-lib/433801)
**Author:** [@leadermax](https://forums.unrealengine.com/u/leadermax)\ **Replies:** 5\ **Last updated:** [July 28, 2023, 3:18am UTC](https://forums.unrealengine.com/t/link-fatal-error-lnk1181-cannot-open-file-ue4-perceptionneuronruntime-lib/433801 "2023-07-28T03:18:47Z")
Plugin Name: Perception Neuron Unreal Engine Version : 4.19.2 Full error: LINK : fatal error LNK1181:cannot open input file ‘C:\\Users\\Max\\Documents\\Unreal Projects\\ProteusTemplate-master\\Plugins\\PerceptionNeuron\\Binari… --- ## [Linker error when using std::chrono::high\_resolution\_clock::now()](https://forums.unrealengine.com/t/linker-error-when-using-std-now/1230119)
**Author:** [@HytaIe](https://forums.unrealengine.com/u/HytaIe)\ **Replies:** 0\ **Last updated:** [July 15, 2023, 7:15pm UTC](https://forums.unrealengine.com/t/linker-error-when-using-std-now/1230119 "2023-07-15T19:15:51Z")
I wanted to make use of time\_point in my game, but when I call std::chrono::high\_resolution\_clock::now() I get a LNK2019 error, namely: unresolved external symbol \_Query\_perf\_counter referenced in function… and unres… --- ## [Casting AController to AAIController results in error LNK2019: unresolved external symbol](https://forums.unrealengine.com/t/casting-acontroller-to-aaicontroller-results-in-error-lnk2019-unresolved-external-symbol/1183110)
**Author:** [@NightmareGames](https://forums.unrealengine.com/u/NightmareGames)\ **Replies:** 4\ **Last updated:** [June 2, 2023, 4:09am UTC](https://forums.unrealengine.com/t/casting-acontroller-to-aaicontroller-results-in-error-lnk2019-unresolved-external-symbol/1183110 "2023-06-02T04:09:07Z")
I have a fairly simple function I just started writing inside an actor component: void Uai\_patrol\_cpp::NextPatrolNode() { APawn\* pawn = Cast\(GetOwner()); AController\* controller = pawn-\>GetController(); AAICon… --- ## [Failing to create a CDO on load for UMG widget blueprint with a native parent class from a particular plugin module](https://forums.unrealengine.com/t/failing-to-create-a-cdo-on-load-for-umg-widget-blueprint-with-a-native-parent-class-from-a-particular-plugin-module/1152285)
**Author:** [@Draco\_Houston](https://forums.unrealengine.com/u/Draco_Houston)\ **Replies:** 1\ **Last updated:** [May 3, 2023, 2:24pm UTC](https://forums.unrealengine.com/t/failing-to-create-a-cdo-on-load-for-umg-widget-blueprint-with-a-native-parent-class-from-a-particular-plugin-module/1152285 "2023-05-03T14:24:07Z")
I can’t figure out why this is happening to my plugin classes and not others, but I have some kind of dependency/load order problem with a pair of UMG widgets. The widgets are a settings screen, and a settings entry wid… --- ## [How to use unreal engine modules in C++ (Linker Error)](https://forums.unrealengine.com/t/how-to-use-unreal-engine-modules-in-c-linker-error/735104)
**Author:** [@shivansh\_pandey2](https://forums.unrealengine.com/u/shivansh_pandey2)\ **Replies:** 4\ **Last updated:** [March 29, 2023, 8:43pm UTC](https://forums.unrealengine.com/t/how-to-use-unreal-engine-modules-in-c-linker-error/735104 "2023-03-29T20:43:20Z")
I am trying to use unreal’s built-in “AndroidAdvertising” module in c++. Below is the AndroidAdvertising module’s location in 4.27 Firstly, I added “AndroidAdvertising” to the build.cs .uproject target.cs A… --- ## [Unresolved external symbol - Kinect Lirary](https://forums.unrealengine.com/t/unresolved-external-symbol-kinect-lirary/298230)
**Author:** [@Creedzy](https://forums.unrealengine.com/u/Creedzy)\ **Replies:** 1\ **Last updated:** [February 27, 2022, 10:26am UTC](https://forums.unrealengine.com/t/unresolved-external-symbol-kinect-lirary/298230 "2022-02-27T10:26:14Z")
Hi guys, Im trying to make a plugin for Kinect 1.8, and I am currently trying to load the kinect library, but I ran into some issues that I cant resolve for 2 days now. I am getting this error and i have no clue what i… --- ## [LinkError When Extend Niagara Node With C++](https://forums.unrealengine.com/t/linkerror-when-extend-niagara-node-with-c/490788)
**Author:** [@\_XD\_10](https://forums.unrealengine.com/u/_XD_10)\ **Replies:** 0\ **Last updated:** [November 10, 2021, 7:17pm UTC](https://forums.unrealengine.com/t/linkerror-when-extend-niagara-node-with-c/490788 "2021-11-10T19:17:44Z")
i want to extend a simple Niagara Node . \[ProjectFile.zip\]\[1\] I Build.cs： here is code and error message: --- ## [link error when using some functions of PropertyEditor](https://forums.unrealengine.com/t/link-error-when-using-some-functions-of-propertyeditor/487272)
**Author:** [@ProjectMiao](https://forums.unrealengine.com/u/ProjectMiao)\ **Replies:** 0\ **Last updated:** [August 10, 2021, 6:09am UTC](https://forums.unrealengine.com/t/link-error-when-using-some-functions-of-propertyeditor/487272 "2021-08-10T06:09:39Z")
FPropertyEditorModule& PropertyEditorModule = FModuleManager::Get().GetModuleChecked(“PropertyEditor”); FPropertyTypeLayoutCallback PropertyTypeLayoutCallback = PropertyEditorModule.GetPropertyTypeCustomization(CachedVa… [Next page](https://forums.unrealengine.com/tag/linker-error/4704.md?match_all_tags=true&page=1&tags%5B%5D=linker-error)