Call Of Duty Exe Err Mss Init Failed 150 Portable Jun 2026

The is a frustrating error that has plagued multiple iterations of the Call of Duty franchise, ranging from classic titles like Call of Duty 2 to modern entries within the Call of Duty HQ launcher, including Modern Warfare III and Warzone . This error typically appears during game initialization, signaling a failure in the Miles Sound System (MSS) —an audio middleware component—to initialize properly, which consequently prevents the game's executable ( .exe ) from starting.

The good news is that while the error message is technical and intimidating, the solutions are often straightforward. Based on community findings, support documentation, and extensive user reports, this guide will break down exactly what this error means, what causes it, and most importantly, the definitive step-by-step methods to get you back in the action.

If you can tell me (Steam, Battle.net, or Xbox App) and your PC's audio device (e.g., Realtek, Corsair Headset), I can provide more specific, tailored steps. Call of duty exe err mss init failed 150

Right-click your audio device (e.g., Realtek Audio) and select .

USB devices, specialized headsets, or microphones interfering with audio initialization. The is a frustrating error that has plagued

To fix a problem effectively, it's important to understand what it is. The error essentially means that the game's audio engine, "Miles Sound System," has failed to start properly. The number 150 likely represents a specific internal error code related to a failure in a component of the Miles Sound System, such as waveOutOpen() , a function used to access your computer's sound card.

: Modern Windows settings sometimes use sample rates (e.g., 192kHz) that classic game engines cannot process, leading to a crash during the initialization phase. Resolving the Error such as waveOutOpen()

: The executable launcher is being blocked from interacting with the Windows folder system. Troubleshooting Solutions 1. Enable Stereo Mix or Plug in an Audio Jack