OVaduva
June 18, 2025, 11:07pm
1
Hello,
I switched from Unreal 5.5.4 to Unreal 5.6 and when I tried to build my solution I received a lot of errors like this:
3>------ Building 243 action(s) started ------
3>[1/243] Compile [x64] SharedPCH.UnrealEd.Project.ValApi.ValExpApi.Cpp20.InclOrderUnreal5_3.cpp
3>[2/243] Compile [x64] SharedPCH.UnrealEd.Project.NonOptimized.ValApi.ValExpApi.Cpp20.InclOrderUnreal5_3.cpp
3>[3/243] GenerateTLH dte80a.tlh
3>[4/243] Resource Default.rc2
… a lot of errors with “Resource Default.rc2” …
3>Result: Failed (OtherCompilationError)
I cleaned up all the Binaries, Intermediate, Saved folders and rebuild solution.Setting Up Visual Studio Development Environment for C++ Projects in Unreal Engine | Unreal Engine 5.6 Documentation | Epic Developer Community
What I can do?
Jason
June 20, 2025, 10:50am
2
i have a same problem . did u solve this problem ? if you have already solved, please share us
OVaduva
June 20, 2025, 11:44am
3
Nop, I reverted back to unreal 5.5. I’m still waiting for a solution.
Also I found a similar post UE 5.6 Compile error - Resource Default.rc2: Exited with error code -1 - #3 by chrissun14
I was having the same error (-1 return) and I was able to workaround by disabling Unreal Build Accelerator (Note that I had the same symptoms- 5.5 was and is still fine, 5.6 source only has this problem) Trying to dig more into the problem (it may just be my local machine as some colleagues are not having the problem) but curious if this helps you as it sounds like multiple people are having this issue.
The way I did this was modify (PROJECT_DIRECTORY)/Saved/UnrealBuildTool/BuildConfiguration.xml to the following:
<?xml version="1.0" encoding="utf-8" ?>
<Configuration xmlns="https://www.unrealengine.com/BuildConfiguration">
<BuildConfiguration>
<bAllowUBAExecutor>false</bAllowUBAExecutor>
</BuildConfiguration>
</Configuration>
2 Likes
I had had this following error while packaging, similar to the others here (-1) as you mentioned.
UATHelper: Packaging (Windows): ********** BUILD COMMAND STARTED **********
UATHelper: Packaging (Windows): Running: G:\unreal launcher\UE_5.6\Engine\Binaries\ThirdParty\DotNet\8.0.300\win-x64\dotnet.exe "G:\unreal launcher\UE_5.6\Engine\Binaries\DotNET\UnrealBuildTool\UnrealBuildTool.dll" Starfall Win64 Shipping -Project="G:\unreal\game\starfall 5.6\Starfall.uproject" -Manifest="G:\unreal\game\starfall 5.6\Intermediate\Build\Manifest.xml" -remoteini="G:\unreal\game\starfall 5.6" -skipdeploy -distribution -log="C:\Users\gothicserpent\AppData\Roaming\Unreal Engine\AutomationTool\Logs\G+unreal+launcher+UE_5.6\UBA-Starfall-Win64-Shipping.txt"
UATHelper: Packaging (Windows): Log file: C:\Users\gothicserpent\AppData\Roaming\Unreal Engine\AutomationTool\Logs\G+unreal+launcher+UE_5.6\UBA-Starfall-Win64-Shipping.txt
UATHelper: Packaging (Windows): Using 'git status' to determine working set for adaptive non-unity build (G:\unreal\game\starfall 5.6).
UATHelper: Packaging (Windows): Creating makefile for Starfall (no existing makefile)
UATHelper: Packaging (Windows): Parsing headers for Starfall
UATHelper: Packaging (Windows): Running Internal UnrealHeaderTool "G:\unreal\game\starfall 5.6\Starfall.uproject" "G:\unreal\game\starfall 5.6\Intermediate\Build\Win64\Starfall\Shipping\Starfall.uhtmanifest" -WarningsAsErrors -installed
UATHelper: Packaging (Windows): Total of 0 written
UATHelper: Packaging (Windows): Reflection code generated for Starfall in 2.1330469 seconds
UATHelper: Packaging (Windows): Waiting for 'git status' command to complete
UATHelper: Packaging (Windows): Terminating git child process due to timeout
UATHelper: Packaging (Windows): Writing manifest to G:\unreal\game\starfall 5.6\Intermediate\Build\Manifest.xml
UATHelper: Packaging (Windows): Building Starfall...
UATHelper: Packaging (Windows): Using Visual Studio 2022 14.38.33145 toolchain (C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.38.33130) and Windows 10.0.22621.0 SDK (C:\Program Files (x86)\Windows Kits\10).
UATHelper: Packaging (Windows): Determining max actions to execute in parallel (10 physical cores, 20 logical cores)
UATHelper: Packaging (Windows): Executing up to 10 processes, one per physical core
UATHelper: Packaging (Windows): Using Unreal Build Accelerator local executor to run 10 action(s)
UATHelper: Packaging (Windows): Storage capacity 40Gb
UATHelper: Packaging (Windows): ---- Starting trace: 250721_173332 ----
UATHelper: Packaging (Windows): UbaServer - Listening on 0.0.0.0:1345
UATHelper: Packaging (Windows): ------ Building 10 action(s) started ------
UATHelper: Packaging (Windows): [1/10] Copy tbbmalloc.dll
UATHelper: Packaging (Windows): [2/10] Copy tbb12.dll
UATHelper: Packaging (Windows): [3/10] Copy D3D12Core.dll
UATHelper: Packaging (Windows): [4/10] Copy d3d12SDKLayers.dll
UATHelper: Packaging (Windows): [5/10] Copy DirectML.dll
UATHelper: Packaging (Windows): [6/10] Resource Default.rc2
UATHelper: Packaging (Windows): Resource Default.rc2: Exited with error code -1 . The build will fail.
UATHelper: Packaging (Windows): Resource Default.rc2: WorkingDirectory G:\unreal launcher\UE_5.6\Engine\Source
UATHelper: Packaging (Windows): Resource Default.rc2: C:\Program Files (x86)\Windows Kits\10\bin\10.0.22621.0\x64\rc.exe /nologo /D_WIN64 /l 0x409 /I "." /I "C:/Program Files/Microsoft Visual Studio/2022/Community/VC/Tools/MSVC/14.38.33130/INCLUDE" /I "C:/Program Files (x86)/Windows Kits/10/include/10.0.22621.0/ucrt" /I "C:/Program Files (x86)/Windows Kits/10/include/10.0.22621.0/shared" /I "C:/Program Files (x86)/Windows Kits/10/include/10.0.22621.0/um" /I "C:/Program Files (x86)/Windows Kits/10/include/10.0.22621.0/winrt" /DIS_PROGRAM=0 /DUE_GAME=1 /DUSE_SHADER_COMPILER_WORKER_TRACE=0 /DUE_
REFERENCE_COLLECTOR_REQUIRE_OBJECTPTR=1 /DWITH_VERSE_VM=0 /DENABLE_PGO_PROFILE=0 /DUSE_VORBIS_FOR_STREAMING=1 /DUSE_XMA2_FOR_STREAMING=1 /DWITH_DEV_AUTOMATION_TESTS=0 /DWITH_PERF_AUTOMATION_TESTS=0 /DWITH_LOW_LEVEL_TESTS=0 /DEXPLICIT_TESTS_TARGET=0 /DWITH_TESTS=0 /DUNICODE /D_UNICODE /D__UNREAL__ /DIS_MONOLITHIC=1 /DIS_MERGEDMODULES=0 /DWITH_ENGINE=1 /DWITH_UNREAL_DEVELOPER_TOOLS=0 /DWITH_UNREAL_TARGET_DEVELOPER_TOOLS=0 /DWITH_APPLICATION_CORE=1 /DWITH_COREUOBJECT=1 /DUE_TRACE_ENABLED=0 /DUE_TRACE_FORCE_ENABLED=0 /DWITH_VERSE=1 /DUE_USE_VERSE_PATHS=1 /DWITH_VERSE_BPVM=1 /DUSE_STATS_WITHOUT_ENG
INE=0 /DWITH_PLUGIN_SUPPORT=0 /DWITH_ACCESSIBILITY=1 /DWITH_PERFCOUNTERS=0 /DWITH_FIXED_TIME_STEP_SUPPORT=1 /DUSE_LOGGING_IN_SHIPPING=0 /DALLOW_CONSOLE_IN_SHIPPING=0 /DALLOW_PROFILEGPU_IN_TEST=0 /DALLOW_PROFILEGPU_IN_SHIPPING=0 /DWITH_LOGGING_TO_MEMORY=0 /DUSE_CACHE_FREED_OS_ALLOCS=1 /DUSE_CHECKS_IN_SHIPPING=0 /DUSE_UTF8_TCHARS=0 /DUSE_ESTIMATED_UTCNOW=0 /DUE_ALLOW_EXEC_COMMANDS_IN_SHIPPING=1 /DWITH_EDITOR=0 /DWITH_EDITORONLY_DATA=0 /DWITH_CLIENT_CODE=1 /DWITH_SERVER_CODE=1 /DUE_FNAME_OUTLINE_NUMBER=0 /DWITH_PUSH_MODEL=0 /DWITH_CEF3=1 /DWITH_LIVE_CODING=0 /DWITH_CPP_MODULES=0 /DWITH_CPP_COROUT
INES=0 /DWITH_PROCESS_PRIORITY_CONTROL=0 /DUBT_MODULE_MANIFEST="UnrealGame-Win64-Shipping.modules" /DUBT_MODULE_MANIFEST_DEBUGGAME="UnrealGame-Win64-DebugGame.modules" /DUBT_COMPILED_PLATFORM=Win64 /DUBT_COMPILED_TARGET=Game /DUE_APP_NAME="UnrealGame" /DUE_WARNINGS_AS_ERRORS=0 /DUE_ENGINE_DIRECTORY="../../../../../unreal launcher/UE_5.6/Engine/" /DFORCE_ANSI_ALLOCATOR=0 /DUSE_MALLOC_BINNED2=1 /DUSE_MALLOC_BINNED3=0 /DNDIS_MINIPORT_MAJOR_VERSION=0 /DWIN32=1 /D_WIN32_WINNT=0x0601 /DWINVER=0x0601 /DPLATFORM_WINDOWS=1 /DPLATFORM_MICROSOFT=1 /DOVERRIDE_PLATFORM_HEADER_NAME=Windows /DRHI_RAYTRACING=
1 /DWINDOWS_MAX_NUM_TLS_SLOTS=2048 /DWINDOWS_MAX_NUM_THREADS_WITH_TLS_SLOTS=512 /DNDEBUG=1 /DUE_BUILD_SHIPPING=1 /DORIGINAL_FILE_NAME="Starfall-Win64-Shipping.exe" /DBUILT_FROM_CHANGELIST=43139311 /DBRANCH_NAME=++UE5+Release-5.6 /DBUILD_VERSION=++UE5+Release-5.6-CL-43139311 /DBUILD_ICON_FILE_NAME="\"..\\Build\\Windows\\Resources\\Default.ico\"" /DPROJECT_COPYRIGHT_STRING="Fill out your copyright notice in the Description page of Project Settings." /DPROJECT_PRODUCT_IDENTIFIER=Starfall /fo "G:/unreal/game/starfall 5.6/Intermediate/Build/Win64/x64/Starfall/Shipping/Starfall-Win64-Shipping.exe/De
fault.rc2.res" "../Build/Windows/Resources/Default.rc2"
UATHelper: Packaging (Windows): Compile [x64] SharedPCH.Core.Project.ValApi.ValExpApi.Cpp20.cpp: Exited with error code -1 . The build will fail.
UATHelper: Packaging (Windows): Compile [x64] SharedPCH.Core.Project.ValApi.ValExpApi.Cpp20.cpp: WorkingDirectory G:\unreal launcher\UE_5.6\Engine\Source
UATHelper: Packaging (Windows): Compile [x64] SharedPCH.Core.Project.ValApi.ValExpApi.Cpp20.cpp: C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.38.33130\bin\Hostx64\x64\cl.exe @"G:/unreal/game/starfall 5.6/Intermediate/Build/Win64/x64/Starfall/Shipping/Core/SharedPCH.Core.Project.ValApi.ValExpApi.Cpp20.h.obj.rsp"
UATHelper: Packaging (Windows): [7/10] Compile [x64] SharedPCH.Core.Project.ValApi.ValExpApi.Cpp20.cpp
UATHelper: Packaging (Windows): Trace written to file C:/Users/gothicserpent/AppData/Roaming/Unreal Engine/AutomationTool/Logs/G+unreal+launcher+UE_5.6/UBA-Starfall-Win64-Shipping.uba with size 2.4kb
UATHelper: Packaging (Windows): Total time in Unreal Build Accelerator local executor: 4.09 seconds
UATHelper: Packaging (Windows): Result: Failed (OtherCompilationError)
UATHelper: Packaging (Windows): Total execution time: 32.98 seconds
UATHelper: Packaging (Windows): Took 33.46s to run dotnet.exe, ExitCode=6
UATHelper: Packaging (Windows): UnrealBuildTool failed. See log for more details. (C:\Users\gothicserpent\AppData\Roaming\Unreal Engine\AutomationTool\Logs\G+unreal+launcher+UE_5.6\UBA-Starfall-Win64-Shipping.txt)
UATHelper: Packaging (Windows): AutomationTool executed for 0h 0m 37s
UATHelper: Packaging (Windows): AutomationTool exiting with ExitCode=6 (6)
UATHelper: Packaging (Windows): BUILD FAILED
LogStreaming: Display: FlushAsyncLoading(333): 1 QueuedPackages, 0 AsyncPackages
PackagingResults: Error: Unknown Error
After trying your code in BuildConfiguration.xml in my project’s Saved\UnrealBuildTool directory, it all worked!
These are my current results for packaging my projects in 5.6:
UATHelper: Packaging (Windows): Running AutomationTool...
UATHelper: Packaging (Windows): Using bundled DotNet SDK version: 8.0.300 win-x64
UATHelper: Packaging (Windows): Starting AutomationTool...
UATHelper: Packaging (Windows): Parsing command line: -ScriptsForProject="G:/unreal/game/starfall 5.6/Starfall.uproject" Turnkey -command=VerifySdk -platform=Win64 -UpdateIfNeeded -EditorIO -EditorIOPort=56217 -project="G:/unreal/game/starfall 5.6/Starfall.uproject" BuildCookRun -nop4 -utf8output -nocompileeditor -skipbuildeditor -cook -project="G:/unreal/game/starfall 5.6/Starfall.uproject" -unrealexe="G:\unreal launcher\UE_5.6\Engine\Binaries\Win64\UnrealEditor-Cmd.exe" -platform=Win64 -installed -stage -archive -package -build -pak -iostore -compressed -prereqs -archivedirectory=G:/packaged
game/starfall -distribution -manifests -clientconfig=Shipping -nodebuginfo -nocompile -nocompileuat
UATHelper: Packaging (Windows): Initializing script modules...
UATHelper: Packaging (Windows): Total script module initialization time: 0.48 s.
UATHelper: Packaging (Windows): Using C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Current\Bin\MSBuild.exe
UATHelper: Packaging (Windows): Executing commands...
UATHelper: Packaging (Windows): Installed Sdk validity:
UATHelper: Packaging (Windows): Win64: (Status=Valid, MinAllowed_Sdk=10.0.19041.0, MaxAllowed_Sdk=10.9.99999.0, Current_Sdk=10.0.22621.0, Allowed_AutoSdk=10.0.22621.0, Current_AutoSdk=, Flags="InstalledSdk_ValidVersionExists, Sdk_HasBestVersion")
UATHelper: Packaging (Windows): Scanning for envvar changes...
UATHelper: Packaging (Windows): ... done!
UATHelper: Packaging (Windows): Cleaning Temp Paths...
UATHelper: Packaging (Windows): BUILD SUCCESSFUL
UATHelper: Packaging (Windows): Setting up ProjectParams for G:\unreal\game\starfall 5.6\Starfall.uproject
UATHelper: Packaging (Windows): ********** BUILD COMMAND STARTED **********
UATHelper: Packaging (Windows): Running: G:\unreal launcher\UE_5.6\Engine\Binaries\ThirdParty\DotNet\8.0.300\win-x64\dotnet.exe "G:\unreal launcher\UE_5.6\Engine\Binaries\DotNET\UnrealBuildTool\UnrealBuildTool.dll" Starfall Win64 Shipping -Project="G:\unreal\game\starfall 5.6\Starfall.uproject" -Manifest="G:\unreal\game\starfall 5.6\Intermediate\Build\Manifest.xml" -remoteini="G:\unreal\game\starfall 5.6" -skipdeploy -distribution -log="C:\Users\gothicserpent\AppData\Roaming\Unreal Engine\AutomationTool\Logs\G+unreal+launcher+UE_5.6\UBA-Starfall-Win64-Shipping.txt"
UATHelper: Packaging (Windows): Log file: C:\Users\gothicserpent\AppData\Roaming\Unreal Engine\AutomationTool\Logs\G+unreal+launcher+UE_5.6\UBA-Starfall-Win64-Shipping.txt
UATHelper: Packaging (Windows): Using 'git status' to determine working set for adaptive non-unity build (G:\unreal\game\starfall 5.6).
UATHelper: Packaging (Windows): Creating makefile for Starfall (manifest 'G:\unreal\game\starfall 5.6\Intermediate\Build\Manifest.xml' not found)
UATHelper: Packaging (Windows): Waiting for 'git status' command to complete
UATHelper: Packaging (Windows): Terminating git child process due to timeout
UATHelper: Packaging (Windows): Writing manifest to G:\unreal\game\starfall 5.6\Intermediate\Build\Manifest.xml
UATHelper: Packaging (Windows): Building Starfall...
UATHelper: Packaging (Windows): Using Visual Studio 2022 14.38.33145 toolchain (C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.38.33130) and Windows 10.0.22621.0 SDK (C:\Program Files (x86)\Windows Kits\10).
UATHelper: Packaging (Windows): Determining max actions to execute in parallel (10 physical cores, 20 logical cores)
UATHelper: Packaging (Windows): Executing up to 10 processes, one per physical core
UATHelper: Packaging (Windows): Using Parallel executor to run 5 action(s)
UATHelper: Packaging (Windows): ------ Building 5 action(s) started ------
UATHelper: Packaging (Windows): [1/5] Resource Default.rc2
UATHelper: Packaging (Windows): [2/5] Compile [x64] SharedPCH.Core.Project.ValApi.ValExpApi.Cpp20.cpp
UATHelper: Packaging (Windows): [3/5] Compile [x64] Module.Starfall.cpp
UATHelper: Packaging (Windows): [4/5] Link [x64] Starfall-Win64-Shipping.exe
UATHelper: Packaging (Windows): Creating library G:\unreal\game\starfall 5.6\Binaries\Win64\Starfall-Win64-Shipping.lib and object G:\unreal\game\starfall 5.6\Binaries\Win64\Starfall-Win64-Shipping.exp
UATHelper: Packaging (Windows): [5/5] WriteMetadata Starfall-Win64-Shipping.target
UATHelper: Packaging (Windows): Total time in Parallel executor: 27.57 seconds
UATHelper: Packaging (Windows): Result: Succeeded
UATHelper: Packaging (Windows): Total execution time: 54.44 seconds
UATHelper: Packaging (Windows): Took 54.79s to run dotnet.exe, ExitCode=0
UATHelper: Packaging (Windows): Build command time: 54.82 s
UATHelper: Packaging (Windows): ********** BUILD COMMAND COMPLETED **********
...
UATHelper: Packaging (Windows): ********** STAGE COMMAND COMPLETED **********
UATHelper: Packaging (Windows): ********** PACKAGE COMMAND STARTED **********
UATHelper: Packaging (Windows): Package command time: 0.00 s
UATHelper: Packaging (Windows): ********** PACKAGE COMMAND COMPLETED **********
UATHelper: Packaging (Windows): ********** ARCHIVE COMMAND STARTED **********
UATHelper: Packaging (Windows): Archiving to G:/packagedgame/starfall
UATHelper: Packaging (Windows): Archive command time: 0.30 s
UATHelper: Packaging (Windows): ********** ARCHIVE COMMAND COMPLETED **********
UATHelper: Packaging (Windows): BuildCookRun time: 127.50 s
UATHelper: Packaging (Windows): BUILD SUCCESSFUL
UATHelper: Packaging (Windows): AutomationTool executed for 0h 2m 9s
I hope this helps someone else too. Good call in finding this, @sk.alex.ni !