How to Fix Games Crashing at Launch With Exception Code 0xc0000005

0xc0000005 at launch is an access violation wearing an exit code. For shipped games the cause splits between the player's environment and your first seconds of code. Here is the split.

How to fix it

1. Collect a dump, not a guess

Enable WER local dumps for your exe (or ship a crash handler that writes minidumps) — the faulting module in the dump instantly separates 'your code' from 'their overlay/driver'.

2. Suspect the injectors

RGB software, overlays (Discord, GeForce, capture tools), and anti-cheat leftovers inject into new processes and fault — a clean-boot test on a player machine confirms; a known-conflicts list in support docs helps everyone.

3. Check instruction-set floors

Builds using AVX/SSE4.2 crash instantly on older CPUs — either raise stated requirements or build for the lower baseline; the crash offset landing in optimized math code is the tell.

4. Harden your first second

Init code that dereferences config/save data before validating it turns one corrupt file into a launch crash — validate and fall back before anything else runs.

Catching the ones you can't reproduce

The hardest version of this to fix is the one you can't reproduce — it only happens on a player's hardware, OS, driver, or save state, under conditions that simply aren't present on your machine. A report that says “it crashed” or “it froze” gives you nothing to act on, so the bug survives release after release while quietly costing you players.

Automatic error capture closes that gap. Each failure arrives with its full stack trace, the device and OS, the build number, and a breadcrumb trail of what the player did right before it broke, so even a failure you have never seen becomes a specific, reproducible issue. Fold identical failures into one signature ranked by how many players each hits, and your worklist sorts itself worst-first instead of arriving as a stream of vague complaints.

This is where a tool like Bugnet earns its place. Its SDK captures every error automatically with the full stack trace plus device, OS, memory, build, and game-state context, folds duplicates into one grouped issue with an occurrence count, and ties each to the build it first appeared on — so you fix the problem that hurts the most players first and confirm it is gone when its signature disappears from the next release.