Quick answer
Start with a game-file repair in the launcher you use. Reboot and test before deleting caches or reinstalling; 6036 has occurred across different Warzone versions and is not one universal file path.
1. Verify the installation
- Steam: Library → Call of Duty → Properties → Installed Files → Verify integrity.
- Battle.net: select Call of Duty → gear beside Play → Scan and Repair.
- After repair, restart the client and test the same mode.
2. Clear only reversible caches
- Close the game and launcher.
- On Windows, open Disk Cleanup or Settings → Storage → Temporary files and clear DirectX Shader Cache.
- Restart and allow shaders to compile fully. Do not blindly delete installation directories or user documents.
3. If it persists
Disable overlays and overclocks temporarily, update GPU drivers from the vendor, and inspect the newest crash log. If another title also crashes, diagnose system stability. Include the crash timestamp and platform in a support report.
Sources and review
Reviewed 12 October 2026. Primary reference. Confirm live codes, prices, patch notes and account rules before publication.