# Rider project files not generated on macOS (arm64 + x64 architecture conflict)

**URL:** <https://forums.unrealengine.com/t/rider-project-files-not-generated-on-macos-arm64-x64-architecture-conflict/2644598>\
**Category:** Programming & Scripting\
**Tags:** generateprojectfiles, unreal-engine, architecture, build-failed, question\
**Created:** [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")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![nikita\_ptl](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@nikita\_ptl](https://forums.unrealengine.com/u/nikita_ptl)\
**Post date:** [August 17, 2025, 11:21am UTC](https://forums.unrealengine.com/t/rider-project-files-not-generated-on-macos-arm64-x64-architecture-conflict/2644598/1 "2025-08-17T11:21:57Z")

</div>

# 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:

```auto

Asking CppCompileEnvironment for a single Architecture, but it has multiple Architectures (arm64, x64).

This indicates logic needs to be updated

```

It looks like UnrealBuildTool is confused by the universal binary setup (both arm64 and x64).

Has anyone fixed or worked around this issue? Ideally, I’d like to generate Rider project files for **arm64 only**.

Thanks!