# I get LogAudioMixer error while packaging **URL:** \ **Category:** Platform & Builds\ **Tags:** package, unreal-engine, question\ **Created:** [February 10, 2023, 3:04am UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713 "2023-02-10T03:04:34Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![drexlerrr](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@drexlerrr](https://forums.unrealengine.com/u/drexlerrr)\ **Post date:** [February 10, 2023, 3:04am UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/1 "2023-02-10T03:04:34Z")
When I try to package my project. I get this error. PackagingResults: Error: Unknown Error LogAudioMixer: Warning: Decoder Error, stopping source [CompileFailed] I couldn’t find any help or any information about this error. Please help. ---
**Author:** ![PresumptivePanda](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/presumptivepanda/32/1194593_2.png) [@PresumptivePanda](https://forums.unrealengine.com/u/PresumptivePanda)\ **Post date:** [February 10, 2023, 3:07am UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/2 "2023-02-10T03:07:31Z")
Hi there @drexlerrr. Welcome to the Unreal Engine forums! 🙂 This topic has been moved from **International** to **Platform & Builds**. When posting, please review the categories to ensure your topic is posted in the most relevant space. Thanks and happy developing! 🙂 _If you would prefer a different category feel free to dm/@ me._ ---
**Author:** ![Sergio\_Veros1](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/sergio_veros1/32/618541_2.png) [@Sergio\_Veros1](https://forums.unrealengine.com/u/Sergio_Veros1)\ **Post date:** [February 12, 2023, 1:29pm UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/3 "2023-02-12T13:29:48Z")
Hi, drexlerrr did you find a solution on that problem? ---
**Author:** ![Etienneboy0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Etienneboy0](https://forums.unrealengine.com/u/Etienneboy0)\ **Post date:** [February 17, 2023, 8:00am UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/4 "2023-02-17T08:00:28Z")
i’m getting the same issue. i attached the log file. don’t know how to solve it. [Log.txt](https://forums.unrealengine.com/uploads/short-url/hnebu04eo7QVyHa5qHk63iT32iU.txt) (32.1 KB) ---
**Author:** ![Rosencrutz](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/rosencrutz/32/576397_2.png) [@Rosencrutz](https://forums.unrealengine.com/u/Rosencrutz)\ **Post date:** [March 1, 2023, 2:56pm UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/5 "2023-03-01T14:56:42Z")
Exact same error here, has anyone managed to figure this one out? Would greatly appreciate a solution 🙂 ---
**Author:** ![ruiying](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/ruiying/32/1003723_2.png) [@ruiying](https://forums.unrealengine.com/u/ruiying)\ **Post date:** [March 17, 2023, 3:33pm UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/6 "2023-03-17T15:33:16Z")
Same error +1 > PackagingResults: Error: Unknown Error > LogAudioMixer: Warning: Decoder Error, stopping source [CompileFailed] ---
**Author:** ![FabianaCarboni](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@FabianaCarboni](https://forums.unrealengine.com/u/FabianaCarboni)\ **Post date:** [March 20, 2023, 1:20pm UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/7 "2023-03-20T13:20:42Z")
Same error ---
**Author:** ![ArksiderDev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@ArksiderDev](https://forums.unrealengine.com/u/ArksiderDev)\ **Post date:** [March 29, 2023, 4:13am UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/8 "2023-03-29T04:13:53Z")
I think I figured it out. It’s some kind of plugin error. I had uninstalled some plugins, but reinstalled them, and now it seems to be building. Here is one of the occurrences: [AI for NPC, MetaHuman - Dialog, actions and general intelligence - by Convai in Code Plugins - UE Marketplace](http://marketplace-website-node-launcher-prod.ol.epicgames.com/ue/marketplace/en-US/product/convai/questions) CTRL+F -ed and found some one was having the same issues because Google Firestore was having complicacies with the plugin/s that the author of that asset created/implemented. ---
**Author:** ![ArksiderDev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@ArksiderDev](https://forums.unrealengine.com/u/ArksiderDev)\ **Post date:** [March 29, 2023, 4:13am UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/9 "2023-03-29T04:13:55Z")
Exact same error here. Is it supposed to be audio related error ? All my WAVs and Audio cues don’t have anything in the “sound class” slot. Is it because of that ? ---
**Author:** ![RafaSaless](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/rafasaless/32/1123861_2.png) [@RafaSaless](https://forums.unrealengine.com/u/RafaSaless)\ **Post date:** [April 5, 2023, 1:56pm UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/10 "2023-04-05T13:56:55Z")
Same error here too. I’ve been using the MetaHuman, so I’m assuming that the issue is around that. Gonna keep following this thread… ---
**Author:** ![thiago.bento1](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/thiago.bento1/32/489822_2.png) [@thiago.bento1](https://forums.unrealengine.com/u/thiago.bento1)\ **Post date:** [April 21, 2023, 1:09am UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/11 "2023-04-21T01:09:32Z")
Same problem here, when packing. Has anyone got a solution? ---
**Author:** ![JFD3888](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@JFD3888](https://forums.unrealengine.com/u/JFD3888)\ **Post date:** [April 21, 2023, 3:51am UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/12 "2023-04-21T03:51:22Z")
LogAudioMixer: Warning: Decoder Error, stopping source [CompileFailed] I got the same error. Was anyone able to find a solution ---
**Author:** ![kimurayuudai](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@kimurayuudai](https://forums.unrealengine.com/u/kimurayuudai)\ **Post date:** [April 21, 2023, 9:30pm UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/13 "2023-04-21T21:30:39Z")
I got this problem too when I was trying to build. I had two problems: 1. My visual studio did not have the c++ packages installed for windows app development and game development, so I installed those and updated visual studio (community 2019 because I also develop on Unity) 2. My file path for my project contained a special character, so once I moved the project folder out to a different directory with no special characters, it worked. Hope this helps! ---
**Author:** ![B.VIARD-F3DF](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@B.VIARD-F3DF](https://forums.unrealengine.com/u/B.VIARD-F3DF)\ **Post date:** [April 24, 2023, 5:51pm UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/14 "2023-04-24T17:51:24Z")
Hi every one, I had the same issue than you. PackagingResults: Error: Unknown Error LogAudioMixer: Warning: Decoder Error, stopping source [CompileFailed] I’m working on Unreal Engine 5.1.1, my project contains not a lot of Blueprints and code, and I had this error so I didn’t understand where the problem came from. I finaly fixed the issue and my project have been package well. Step to follow: 1. Install Visual studio 2022 or Update the old version to the lastet version. 2.Open the VisualStudio22\_Installer and enable the following settings: - Desktop & Mobile section: - Enable “Desktop development with C++” - Game section: - Enable “Games development with Unity” - Enable “Games development with C++” Go back on your Unreal project: 1. In the project settings/ Platforms/ Windows In the D3D12/ D3D11 Targeted Shader Formats, make sure that **SM5** and **SM6** are enabled (Enable SM5 for both). 2. You can find below the previous section “Toolchain”, apply **Visual studio 2022**. 3. Close the project settings. 4. In the project Editor go on the Platorms panel to package your project, and in the **windows platform/ DESKTOP-…** , click on **Force Update Device** (to update your SDK drivers) and restart your project. 5. When your project is restarted, go on the **Platforms** panel, select windows and **Package project** I hope it will work for you guys. If not I found the problem by launching the game with the **Project Launcher** The Output Log send me this message: ERROR: UnrealBuildTool has banned the MSVC 14.32.31326-14.32.31328 toolchains due to compiler issues. Please install a different toolchain from the Visual Studio installer. So I updated Visual Studio and verified that the new version is compatible with my project settings. ---
**Author:** ![shadowbreak200](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@shadowbreak200](https://forums.unrealengine.com/u/shadowbreak200)\ **Post date:** [August 27, 2025, 8:03pm UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/15 "2025-08-27T20:03:33Z")
i managed to remove LogAudioMixer warning but i still have the unknown error so i say im getting close! ---
**Author:** ![aidnewsome](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/aidnewsome/32/602537_2.png) [@aidnewsome](https://forums.unrealengine.com/u/aidnewsome)\ **Post date:** [December 12, 2025, 9:35pm UTC](https://forums.unrealengine.com/t/i-get-logaudiomixer-error-while-packaging/767713/16 "2025-12-12T21:35:19Z")
How?