# Error building IL2CPP Unity 2020.3.41f1 project with FMOD 2.02.09

**URL:** <https://qa.fmod.com/t/error-building-il2cpp-unity-2020-3-41f1-project-with-fmod-2-02-09/19541>\
**Category:** Unity\
**Created:** [November 17, 2022, 3:59pm UTC](https://qa.fmod.com/t/error-building-il2cpp-unity-2020-3-41f1-project-with-fmod-2-02-09/19541 "2022-11-17T15:59:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![shii](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/shii/32/4246_2.png) [@shii](https://qa.fmod.com/u/shii)\
**Post date:** [November 17, 2022, 3:59pm UTC](https://qa.fmod.com/t/error-building-il2cpp-unity-2020-3-41f1-project-with-fmod-2-02-09/19541/1 "2022-11-17T15:59:14Z")

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Hi!  
When trying to build IL2CPP Unity 2020.3.41f1 project with FMOD 2.02.09 getting error in the console and build fails.  
Tested with both .NET 4.x and .NET Standard 2.0 api compatibility levels. Mono builds fine. Nothing else in the project, clean scene.  
Also tested with FMOD 2.02.10 - same issue.

Full error code: [https://pastebin.com/MSJTYcU2](https://pastebin.com/MSJTYcU2)

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<div class="post-metadata">

**Author:** ![shii](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/shii/32/4246_2.png) [@shii](https://qa.fmod.com/u/shii)\
**Post date:** [November 17, 2022, 4:30pm UTC](https://qa.fmod.com/t/error-building-il2cpp-unity-2020-3-41f1-project-with-fmod-2-02-09/19541/2 "2022-11-17T16:30:13Z")

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Apparently this issue happens when Visual Studio 2022.17.4 is installed. Unity knows about this bug and it should be fixed in Unity 2020.3.42f1  
Issue tracker with temporal solution in the bottom comment: [https://issuetracker.unity3d.com/issues/il2cpp-windows-builds-fails-when-using-vs-2022-17-dot-4-0-preview](https://issuetracker.unity3d.com/issues/il2cpp-windows-builds-fails-when-using-vs-2022-17-dot-4-0-preview)  
More info here: [https://forum.unity.com/threads/workaround-for-building-with-il2cpp-with-visual-studio-2022-17-4.1355570/](https://forum.unity.com/threads/workaround-for-building-with-il2cpp-with-visual-studio-2022-17-4.1355570/)