Unusual Process Exit
An "Unusual process exit" message is displayed by the DayZ Launcher whenever it detects that the game was not closed correctly. That may mean that the Operating System (OS) was unable to start the game or that the game has crashed.
The exit code in the message is a number provided by the OS and it may be ambiguous. However, it still may provide a clue about what the issue is and how to solve it.
Common Exit Codes
Here is a short list of common exit codes.
0xC0000374 - STATUS_HEAP_CORRUPTION
- Verify the integrity of the game cache using Steam.