# \#build-failed **URL:** https://forums.unrealengine.com/tag/build-failed/807.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [5.8.1 Project fails to build with Visual Studio 2026](https://forums.unrealengine.com/t/5-8-1-project-fails-to-build-with-visual-studio-2026/2743331)
**Author:** [@Krileon](https://forums.unrealengine.com/u/Krileon)\ **Replies:** 3\ **Last updated:** [November 6, 2026, 6:42pm UTC](https://forums.unrealengine.com/t/5-8-1-project-fails-to-build-with-visual-studio-2026/2743331 "2026-11-06T18:42:08Z")
I can’t figure out why UE5.8.1 keeps trying to build with Visual Studio 2022 despite having 2026 and UE 5.8 documentation stating 2026 is supported. What am I doing wrong here? Do I still need to have 2022 installed? Bel… --- ## [MATLAB 2026a Interface Plugin ](https://forums.unrealengine.com/t/matlab-2026a-interface-plugin/2764117)
**Author:** [@BobbyMinshull](https://forums.unrealengine.com/u/BobbyMinshull)\ **Replies:** 0\ **Last updated:** [September 9, 2026, 8:53pm UTC](https://forums.unrealengine.com/t/matlab-2026a-interface-plugin/2764117 "2026-09-09T20:53:48Z")
Has anybody successfully created a .exe from Unreal Engine 5.4.4 to use in MATLAB Simulink 2026a? I have successfully connected simulink in with Unreal Engine in editor mode with no issues. When packaging I get LINK 2001… --- ## [\[5.8\] BuildPatchTool fails with "FeatureLevel was not provided"](https://forums.unrealengine.com/t/5-8-buildpatchtool-fails-with-featurelevel-was-not-provided/2732453)
**Author:** [@placidetmuzo](https://forums.unrealengine.com/u/placidetmuzo)\ **Replies:** 2\ **Last updated:** [July 27, 2026, 10:21am UTC](https://forums.unrealengine.com/t/5-8-buildpatchtool-fails-with-featurelevel-was-not-provided/2732453 "2026-07-27T10:21:10Z")
Summary When packaging a project with bBuildHttpChunkInstallData=True and assets assigned to chunks \> 0, BuildPatchTool (BPT) fails with: FeatureLevel was not provided. Please provide the FeatureLevel commandline argumen… --- ## [MSB3073 exited with code 8](https://forums.unrealengine.com/t/msb3073-exited-with-code-8/1901997)
**Author:** [@DynaZ\_II\_Spreeds](https://forums.unrealengine.com/u/DynaZ_II_Spreeds)\ **Replies:** 11\ **Last updated:** [July 8, 2026, 2:51pm UTC](https://forums.unrealengine.com/t/msb3073-exited-with-code-8/1901997 "2026-07-08T14:51:39Z")
HELP!!! I’ve tried multiple fixes with no luck. Any ideas for this problem? Thanks in advance. --- ## [Project Launcher build to Android: AutomationTool exiting with ExitCode=1 (Error\_Unknown)](https://forums.unrealengine.com/t/project-launcher-build-to-android-automationtool-exiting-with-exitcode-1-error-unknown/2721799)
**Author:** [@XxpiingyxX](https://forums.unrealengine.com/u/XxpiingyxX)\ **Replies:** 0\ **Last updated:** [May 13, 2026, 9:25am UTC](https://forums.unrealengine.com/t/project-launcher-build-to-android-automationtool-exiting-with-exitcode-1-error-unknown/2721799 "2026-05-13T09:25:10Z")
▶ TL;DR Hello! I am trying to make a build to a PICO headset using the Project Launcher tool. However, I keep running into the following error: AutomationTool exiting with ExitCode=1 (Error\_Unknown) BUILD FAILED My… --- ## [Android Shipping build fails with undefined symbol: LowLevelTasks::FTask::ActiveTask (UE 5.6.1) ](https://forums.unrealengine.com/t/android-shipping-build-fails-with-undefined-symbol-lowleveltasks-activetask-ue-5-6-1/2718321)
**Author:** [@muhammadhammad12](https://forums.unrealengine.com/u/muhammadhammad12)\ **Replies:** 0\ **Last updated:** [April 27, 2026, 2:54pm UTC](https://forums.unrealengine.com/t/android-shipping-build-fails-with-undefined-symbol-lowleveltasks-activetask-ue-5-6-1/2718321 "2026-04-27T14:54:28Z")
Hi, I’m encountering a linker error when building an Android Shipping build in Unreal Engine 5.6.1. The project builds successfully in Development and DebugGame, but fails consistently in Shipping. Error ld.lld: error… --- ## [Generating project files from source on 5.7 with Visual Studio 2026](https://forums.unrealengine.com/t/generating-project-files-from-source-on-5-7-with-visual-studio-2026/2674941)
**Author:** [@RVillani](https://forums.unrealengine.com/u/RVillani)\ **Replies:** 9\ **Last updated:** [April 13, 2026, 11:41pm UTC](https://forums.unrealengine.com/t/generating-project-files-from-source-on-5-7-with-visual-studio-2026/2674941 "2026-04-13T23:41:27Z")
Issue If, like me, you uninstalled VS 2022 after installing VS 2026, you’ll get the following error when generating project files or loading the Default.uprojectdirs file on Rider to launch the UE5 source project: Visua… --- ## [when cloning using Git Desktop LFS files are not included](https://forums.unrealengine.com/t/when-cloning-using-git-desktop-lfs-files-are-not-included/2705492)
**Author:** [@moonie](https://forums.unrealengine.com/u/moonie)\ **Replies:** 2\ **Last updated:** [March 12, 2026, 2:05am UTC](https://forums.unrealengine.com/t/when-cloning-using-git-desktop-lfs-files-are-not-included/2705492 "2026-03-12T02:05:01Z")
So I am trying to clone the repo to use C++, but every time the build fails with errors like - Cannot open include file: ../Plugins/Developer/Concert/ConcertApp/MultiUserClient/… No such file or directory I am cloning… --- ## [Building UE 4.27 with VS 2026](https://forums.unrealengine.com/t/building-ue-4-27-with-vs-2026/2700816)
**Author:** [@RVillani](https://forums.unrealengine.com/u/RVillani)\ **Replies:** 2\ **Last updated:** [February 19, 2026, 5:23am UTC](https://forums.unrealengine.com/t/building-ue-4-27-with-vs-2026/2700816 "2026-02-19T05:23:51Z")
If, like me, you refuse to install an older VS when you have to work on older projects, you might get a bunch of errors from the AutomationTool if you happen to have an MSBuild.exe under this path: C:\\Windows\\Microsoft.… --- ## [UE5.7.1 ProjectLauncher Packaging Error when build .pak file](https://forums.unrealengine.com/t/ue5-7-1-projectlauncher-packaging-error-when-build-pak-file/2693661)
**Author:** [@DaVinci\_13](https://forums.unrealengine.com/u/DaVinci_13)\ **Replies:** 5\ **Last updated:** [January 28, 2026, 2:36am UTC](https://forums.unrealengine.com/t/ue5-7-1-projectlauncher-packaging-error-when-build-pak-file/2693661 "2026-01-28T02:36:23Z")
Hi, I’m trying to build .pak file by UE5.7.1 Project Launcher. But I get some error when packaging. Both mac and windows. There is my package config. And there is the error log: \*\*\*\*\*\*\*\*\*\* COOK COMMAND COMPL… --- ## [DDC request failed for](https://forums.unrealengine.com/t/ddc-request-failed-for/2011512)
**Author:** [@LordMegatron666](https://forums.unrealengine.com/u/LordMegatron666)\ **Replies:** 2\ **Last updated:** [January 27, 2026, 8:17am UTC](https://forums.unrealengine.com/t/ddc-request-failed-for/2011512 "2026-01-27T08:17:10Z")
I get a error when building: “LogHairStrands: Error: \[Groom\] DDC request failed for ‘Peachfuzz\_M\_Thin’ (Key:GROOM\_Vv8r45\_\_00B8207248CC44B88F7DEC8F328A5D8B\_ID72E1E359F851C41549F4E62D22A219FBX00000000000000000000803F000080… --- ## [Unreal Engine 5+ Unable to find target when building a C++ build](https://forums.unrealengine.com/t/unreal-engine-5-unable-to-find-target-when-building-a-c-build/2690615)
**Author:** [@Dirofu](https://forums.unrealengine.com/u/Dirofu)\ **Replies:** 1\ **Last updated:** [January 25, 2026, 3:00am UTC](https://forums.unrealengine.com/t/unreal-engine-5-unable-to-find-target-when-building-a-c-build/2690615 "2026-01-25T03:00:06Z")
There was a problem with creating a build on versions UE 5+ (test 5.4, 5.6, 5.7) with C++. When packing, the error Unable to find target occurs. I marked the problem location with an arrow ( —\> ) LogUObjectHash: Compac… --- ## [BinkMediaPlayer throws errors when building UE4 with PS5 and Switch access.](https://forums.unrealengine.com/t/binkmediaplayer-throws-errors-when-building-ue4-with-ps5-and-switch-access/1999193)
**Author:** [@rent\_treznor](https://forums.unrealengine.com/u/rent_treznor)\ **Replies:** 1\ **Last updated:** [January 16, 2026, 11:57pm UTC](https://forums.unrealengine.com/t/binkmediaplayer-throws-errors-when-building-ue4-with-ps5-and-switch-access/1999193 "2026-01-16T23:57:48Z")
Setting up Unreal Engine 4 project files… While compiling D:\\ue4-consoles\\4.27c\\Engine\\Intermediate\\Build\\BuildRules\\UE4Rules.dll: d:\\ue4-consoles\\4.27c\\Engine\\Platforms\\PS5\\Plugins\\Media\\BinkMedia\\Source\\BinkMediaPlay… --- ## [UE4 Android “Unknown Cook Failure / ExitCode=1” – FIX ](https://forums.unrealengine.com/t/ue4-android-unknown-cook-failure-exitcode-1-fix/2689038)
**Author:** [@vinayaknirantar](https://forums.unrealengine.com/u/vinayaknirantar)\ **Replies:** 0\ **Last updated:** [January 1, 2026, 9:58pm UTC](https://forums.unrealengine.com/t/ue4-android-unknown-cook-failure-exitcode-1-fix/2689038 "2026-01-01T21:58:32Z")
:white\_check\_mark: UE4 Android “Unknown Cook Failure / ExitCode=1” – FIX Problem UE4 Android packaging fails with: Unknown Cook Failure ExitCode=1 DoesPackageExist FAILED Component class is not set Even after: Mig… --- ## [Engine build from source code with error for cvtres.exe ](https://forums.unrealengine.com/t/engine-build-from-source-code-with-error-for-cvtres-exe/2682635)
**Author:** [@Jacob\_Vo](https://forums.unrealengine.com/u/Jacob_Vo)\ **Replies:** 3\ **Last updated:** [December 10, 2025, 1:54pm UTC](https://forums.unrealengine.com/t/engine-build-from-source-code-with-error-for-cvtres-exe/2682635 "2025-12-10T13:54:20Z")
Hi everyone, this is the first time I’m trying to build UE from source code (5.7.0 and 5.7.1). I went through lots of tutorials and documentation on all the prerequisite steps before starting the build. However, the res… --- ## [Packaging failed for plugins - unhandeled exception](https://forums.unrealengine.com/t/packaging-failed-for-plugins-unhandeled-exception/2680564)
**Author:** [@NFU\_Dev](https://forums.unrealengine.com/u/NFU_Dev)\ **Replies:** 1\ **Last updated:** [December 1, 2025, 2:57pm UTC](https://forums.unrealengine.com/t/packaging-failed-for-plugins-unhandeled-exception/2680564 "2025-12-01T14:57:28Z")
hello fellow devs , so i have a plugin i made , which builds fine for 5.3, 5.4 and 5.5 was working too for a while but lately i downloaded the editor debugging symbols , and today i can’t package any plugin even old plu… --- ## [VisualStudioTools Plugin Not Detected When Installed to Engine](https://forums.unrealengine.com/t/visualstudiotools-plugin-not-detected-when-installed-to-engine/2674089)
**Author:** [@Doctor\_Kannon](https://forums.unrealengine.com/u/Doctor_Kannon)\ **Replies:** 1\ **Last updated:** [November 12, 2025, 4:51pm UTC](https://forums.unrealengine.com/t/visualstudiotools-plugin-not-detected-when-installed-to-engine/2674089 "2025-11-12T16:51:57Z")
In Visual Studio, the Unreal Engine Integration Configuration asks if we want to add the VisualStudioTools plugin to the Engine or the Project. I selected Engine. But when I run the Build.bat file, I get the following e… --- ## [Need Help: Unsupported toolset compiler version is not a preferred version error. ](https://forums.unrealengine.com/t/need-help-unsupported-toolset-compiler-version-is-not-a-preferred-version-error/2670348)
**Author:** [@kostasp](https://forums.unrealengine.com/u/kostasp)\ **Replies:** 3\ **Last updated:** [November 1, 2025, 6:49am UTC](https://forums.unrealengine.com/t/need-help-unsupported-toolset-compiler-version-is-not-a-preferred-version-error/2670348 "2025-11-01T06:49:29Z")
Hello guys, I have recently updated my vs 2022 into new version and since then I get the same error while trying to build a game with ue5.5. 1\>Available x64 toolchains (2): 1\> \* C:\\Program Files\\Microsoft Visual Stud… --- ## [Local file format is not compressed. Solution? ](https://forums.unrealengine.com/t/local-file-format-is-not-compressed-solution/2668014)
**Author:** [@Samurai\_X575](https://forums.unrealengine.com/u/Samurai_X575)\ **Replies:** 1\ **Last updated:** [October 23, 2025, 8:34pm UTC](https://forums.unrealengine.com/t/local-file-format-is-not-compressed-solution/2668014 "2025-10-23T20:34:14Z")
Hello, I’m currently trying to package my build for shipping, but I keep getting an error message of a local file format not being compressed. Any solutions or directions on where to find the local file or where in UE5 I… --- ## [UE 5.6 Android build issue: error: package com.google.common.util.concurrent does not exist ](https://forums.unrealengine.com/t/ue-5-6-android-build-issue-error-package-com-google-common-util-concurrent-does-not-exist/2645940)
**Author:** [@SirenaHTB](https://forums.unrealengine.com/u/SirenaHTB)\ **Replies:** 1\ **Last updated:** [October 16, 2025, 6:01pm UTC](https://forums.unrealengine.com/t/ue-5-6-android-build-issue-error-package-com-google-common-util-concurrent-does-not-exist/2645940 "2025-10-16T18:01:23Z")
Hey everyone! After porting the project from UE 5.5 to UE 5.6.1, when building the Android version, the build fails at the very end during the APK packaging step with the following error: UATHelper: Packaging (Android … --- ## [Error while packaging project for Linux ](https://forums.unrealengine.com/t/error-while-packaging-project-for-linux/2630997)
**Author:** [@Andrew\_Sor](https://forums.unrealengine.com/u/Andrew_Sor)\ **Replies:** 8\ **Last updated:** [September 18, 2025, 6:18am UTC](https://forums.unrealengine.com/t/error-while-packaging-project-for-linux/2630997 "2025-09-18T06:18:10Z")
Hi! While building my project for Linux x64 I encountered this error: The instruction at ... referenced memory at ... . Memory cannot be Read But the log showed: UbaSessionServer - ASSERT: ERROR: Access violation readi… --- ## [Android DLC build fails](https://forums.unrealengine.com/t/android-dlc-build-fails/2657156)
**Author:** [@Avatarus](https://forums.unrealengine.com/u/Avatarus)\ **Replies:** 0\ **Last updated:** [September 16, 2025, 1:48pm UTC](https://forums.unrealengine.com/t/android-dlc-build-fails/2657156 "2025-09-16T13:48:15Z")
Building DLC with Http chunks in project launcher fails at the “UAT post launch cleanup” stage. It also happens with a newly created project. This bug seems to have appeared in version 5.3 \[2025.09.16-13.06.33:773\]\[ … --- ## [Can't Package VR project](https://forums.unrealengine.com/t/cant-package-vr-project/2655808)
**Author:** [@AngeloKyri](https://forums.unrealengine.com/u/AngeloKyri)\ **Replies:** 3\ **Last updated:** [September 13, 2025, 6:26pm UTC](https://forums.unrealengine.com/t/cant-package-vr-project/2655808 "2025-09-13T18:26:25Z")
Hi, I have a problem with building/packaging my UE5 VR project that I’m doing for my thesis in UE 5.3.2. I’m at the stage now where I want to make a test export/package to see if everything is ok. I came across a few e… --- ## [Unknow error when compiling for android UE 5.4.4](https://forums.unrealengine.com/t/unknow-error-when-compiling-for-android-ue-5-4-4/2050281)
**Author:** [@JasonMoretti](https://forums.unrealengine.com/u/JasonMoretti)\ **Replies:** 3\ **Last updated:** [August 28, 2025, 7:22am UTC](https://forums.unrealengine.com/t/unknow-error-when-compiling-for-android-ue-5-4-4/2050281 "2025-08-28T07:22:05Z")
UATHelper: Packaging (Android (ASTC)): FAILURE: Build failed with an exception. UATHelper: Packaging (Android (ASTC)): \* Where: UATHelper: Packaging (Android (ASTC)): Build file ‘Z:\\app\\build.gradle’ line: 1 UATHelper… --- ## [Packaging Fails in UE 5.6.1](https://forums.unrealengine.com/t/packaging-fails-in-ue-5-6-1/2651579)
**Author:** [@sohrabkhanlive1](https://forums.unrealengine.com/u/sohrabkhanlive1)\ **Replies:** 1\ **Last updated:** [August 28, 2025, 12:31am UTC](https://forums.unrealengine.com/t/packaging-fails-in-ue-5-6-1/2651579 "2025-08-28T00:31:20Z")
Every time I try to Package the game for testing purposes, it fails and returns with a notification. I’m using UE 5.6.1. This is the log: LogStats: Stats thread started at 0.370588 LogCsvProfiler: Display: Metadata set… --- ## [Error: cannot find symbol](https://forums.unrealengine.com/t/error-cannot-find-symbol/2642788)
**Author:** [@Abhi96k](https://forums.unrealengine.com/u/Abhi96k)\ **Replies:** 3\ **Last updated:** [August 17, 2025, 5:25pm UTC](https://forums.unrealengine.com/t/error-cannot-find-symbol/2642788 "2025-08-17T17:25:30Z")
I have developed a game using Unreal Engine 5.4.4 and now I would like to migrate it to UE 5.6 So, when I opened the same game in UE 5.6 and tried to build, below error occurred Help me to resolve this error. Curre… --- ## [Rider project files not generated on macOS (arm64 + x64 architecture conflict)](https://forums.unrealengine.com/t/rider-project-files-not-generated-on-macos-arm64-x64-architecture-conflict/2644598)
**Author:** [@nikita\_ptl](https://forums.unrealengine.com/u/nikita_ptl)\ **Replies:** 0\ **Last updated:** [August 17, 2025, 11:21am UTC](https://forums.unrealengine.com/t/rider-project-files-not-generated-on-macos-arm64-x64-architecture-conflict/2644598 "2025-08-17T11:21:57Z")
UE5 Rider project generation on macOS: arm64 + x64 conflict Hi all, When I run GenerateProjectFiles.sh -rider on macOS (Apple Silicon), the process finishes, but I see repeated exceptions like this: Asking CppCompileE… --- ## [Even on a brand new, blank C++ project, the build fails. ](https://forums.unrealengine.com/t/even-on-a-brand-new-blank-c-project-the-build-fails/2620082)
**Author:** [@SajeevanVeeriah](https://forums.unrealengine.com/u/SajeevanVeeriah)\ **Replies:** 1\ **Last updated:** [July 27, 2025, 10:08pm UTC](https://forums.unrealengine.com/t/even-on-a-brand-new-blank-c-project-the-build-fails/2620082 "2025-07-27T22:08:21Z")
I have already tried a full, clean reinstallation of both Visual Studio 2022 (with the ‘Game development with C++’ and ‘Unreal Engine installer’ components) and Unreal Engine 5.6. I have also tried ‘Verify’, and ‘Switch … --- ## [Build Engine From Source Code With Python Path Failed!](https://forums.unrealengine.com/t/build-engine-from-source-code-with-python-path-failed/2603365)
**Author:** [@LitTwilight](https://forums.unrealengine.com/u/LitTwilight)\ **Replies:** 0\ **Last updated:** [July 14, 2025, 3:37am UTC](https://forums.unrealengine.com/t/build-engine-from-source-code-with-python-path-failed/2603365 "2025-07-14T03:37:24Z")
I\`am build Unreal Engine From Source Code,but i found the Python path always point to my PYTHONPATH environment variable! I want using the Engine Folder Python dll file without using my Computer Python Version,which con… --- ## [Error: Requested read of 4 bytes when 0 bytes remain](https://forums.unrealengine.com/t/error-requested-read-of-4-bytes-when-0-bytes-remain/413240)
**Author:** [@UaLightning12](https://forums.unrealengine.com/u/UaLightning12)\ **Replies:** 5\ **Last updated:** [July 10, 2025, 7:51am UTC](https://forums.unrealengine.com/t/error-requested-read-of-4-bytes-when-0-bytes-remain/413240 "2025-07-10T07:51:23Z")
Hello! In my project there was such a mistake. Can someone suggest how to fix it? There is no such thing in a clean project. UATHelper: Packaging (Windows (64-bit)): LogTexture: Display: Building textures: T\_AlpinePa… [Next page](https://forums.unrealengine.com/tag/build-failed/807.md?match_all_tags=true&page=1&tags%5B%5D=build-failed)