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.

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.

How to Fix a Game That Won't Launch After Export

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.

Quick answer: When an exported build won't launch (it does nothing, errors immediately, or fails to start), the cause is usually in the export/packaging: a missing dependency or runtime the build needs, assets or files not included in the export, incorrect export settings, or a platform/architecture mismatch. Capture any startup error or crash, review your export configuration, and ensure everything the game needs, dependencies, runtimes, assets, is actually packaged into the build.

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. It's frustrating because the game clearly works (in the editor), but the exported version is missing something it needs to start. The fix is in the export configuration and ensuring the build is complete and correct for the target platform.

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, so it fails to start. Assets/files not included, required files weren't packaged in the export, so the game can't start without them. Wrong export settings, an incorrect export configuration produces a broken or incomplete build. And platform/architecture mismatch, the build targets the wrong platform or architecture for where it's being run (e.g. wrong OS, 32 vs 64-bit).

The signature, fine in editor, won't launch when exported, points squarely at packaging, since the only difference is the export. The editor has everything available; the exported build only has what was packaged.

How to Diagnose It

Look for any error on launch, does it show an error, crash immediately, or silently do nothing? A missing-dependency error (a missing DLL/library) directly names what's absent. A crash on launch can be captured (see startup-crash fixes). Check the export configuration for correctness, and verify the build includes everything it needs. Test the exported build on a clean machine (without your dev tools/runtimes installed), since your dev machine may have dependencies the build relies on that players won't have, a common reason a build launches for you but not for players.

Bugnet captures crashes and errors with context, so a build that launches but then crashes during startup surfaces with a trace, though a build that fails to launch at all (missing dependency before the game runs) is diagnosed via the OS/launcher error and testing on a clean machine. The clean-machine test is key for catching missing-dependency issues your dev machine masks.

How to Fix It

Ensure the build is complete and correct. Include all dependencies/runtimes, package or bundle the runtimes and libraries the game needs (or ensure they're installed/redistributed), so the build has everything it requires to start, and test on a clean machine to confirm no dev-machine-only dependency is missing. Include all assets/files, verify the export includes all required assets and files. Fix export settings, use the correct export configuration for the target platform. Match platform/architecture, export for the correct OS and architecture, and ensure players run the matching build.

The clean-machine test is the most important verification, it catches the missing-dependency case that's invisible on your dev machine. After fixing, the exported build should launch on a clean target machine without anything extra installed. Getting the export complete and correct, all dependencies and assets packaged, right settings, right platform, is what turns a working editor project into a build that actually launches for players.

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.