Why does my exported build launch for me but not for players?

Usually because your development machine has dependencies or runtimes installed that the build relies on but players don't have, so it launches for you and fails for them with a missing-dependency error. Test the exported build on a clean machine (without your dev tools/runtimes installed) to catch this, and bundle or redistribute the required runtimes so the build is self-contained.

Why Won't My Game Launch After I Export It?

Q: Why won't my game launch after I export it?

Because the export/packaging is incomplete or misconfigured: a missing dependency or runtime the build needs, assets or files not included in the export, incorrect export settings, or a platform/architecture mismatch. The game works in the editor (which has everything available) but the exported build only has what was packaged, so if something it needs is missing, it won't launch.

Q: How do I find what's stopping my build from launching?

Look for any launch error (a missing DLL/library error names what's absent; an immediate crash can be captured with a trace), check your export configuration, and crucially, test the build on a clean machine without your dev environment. The clean-machine test reveals missing dependencies that your dev machine masks, which is the most common reason a build won't launch for players.

Quick answer: Your game won't launch after exporting because the export/packaging is incomplete or misconfigured: a missing dependency or runtime the build needs (often masked by your dev machine having it installed), assets or files not included, incorrect export settings, or a platform/architecture mismatch. The game works in the editor (which has everything) but the exported build only has what was packaged.

A game that runs in the editor but won't even launch once exported is a packaging problem, the export didn't produce a complete, runnable build. The game clearly works, but the exported version is missing something it needs to start.

Why an Exported Build Won't Launch

Exporting packages your game into a standalone build, and if that package is incomplete or misconfigured, it won't launch. Common causes: missing dependencies/runtimes (the build needs a runtime, library, or DLL that isn't included or installed on the target), assets/files not included (required files weren't packaged), wrong export settings (an incorrect configuration produces a broken build), and platform/architecture mismatch (the build targets the wrong OS or architecture).

The signature, fine in editor, won't launch when exported, points squarely at packaging, since the only difference is the export. A key trap: your dev machine may have dependencies installed that the build relies on but players don't have, so it launches for you and fails for them.

How to Diagnose and Fix It

Look for any launch error (a missing-dependency error names what's absent; an immediate crash can be captured), check the export configuration, and crucially test the build on a clean machine (without your dev tools/runtimes installed), since your dev machine may mask missing dependencies. Bugnet captures crashes during startup with traces, though a build that fails to launch at all is diagnosed via the OS error and the clean-machine test.

Fix by including all dependencies/runtimes (bundle or redistribute them, and verify on a clean machine), including all assets/files, using the correct export settings, and matching the platform/architecture. See our guide on fixing a game that won't launch after export. The clean-machine test is the key verification.

A build that won't launch after export is a packaging problem, missing dependencies, assets, or wrong settings. Test on a clean machine to catch dependencies your dev machine hides.