Call Of Duty | Exe Err Mss Init Failed 150 Fix

"EXE_ERR_MSS_INIT_FAILED"

The error in Call of Duty (most commonly associated with Call of Duty 2, World at War, and Modern Warfare titles) occurs when the game fails to initialize the Miles Sound System (MSS). This is typically due to corrupted game files, outdated audio drivers, or incompatible sound sample rates. Core Fixes to Try First

  • Open regedit (Registry Editor) as Administrator.
  • Navigate to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Activision\Call of Duty
  • Look for a DWORD called VoiceMSS. If it exists, delete it.
  • If you are brave, create a new DWORD: SoundDriver and set the value to 0 (forces the game to use your Windows default instead of direct hardware access).
  1. Verify Game Files: Check the integrity of the game files through the Battle.net client or Steam, depending on where you purchased the game. This process can repair or replace corrupted files.
  2. Update Microsoft Visual C++ Redistributable: Ensure that the Microsoft Visual C++ Redistributable package is up to date. You can check for updates in the Windows Update settings or by visiting the Microsoft official website.
  3. Update Drivers and DirectX: Make sure your graphics drivers and DirectX are up to date. Outdated drivers can cause compatibility issues.
  4. Disable Conflicting Software: Temporarily disable any overlay applications, antivirus software, or other programs that might be interfering with the game.
  5. Reinstall the Game: If the issue persists, consider reinstalling the game to start with a clean installation.

Device Manager

Since the error is directly related to the sound system, your audio drivers are a likely culprit. Open . Expand "Sound, video and game controllers." Call of duty exe err mss init failed 150

you are trying to play (e.g., Black Ops 2, Modern Warfare, or a classic title)? Are you using headphones, external speakers, or a dedicated sound card "EXE_ERR_MSS_INIT_FAILED" The error in Call of Duty (most

If none of the above works, the game installation itself may be critically broken. Uninstalling the game entirely—including deleting the leftover folders in your Program Files—can resolve stubborn issues. Open regedit (Registry Editor) as Administrator

Miller laughed nervously. "Very funny, Kowalski. You hacking the exe again?"

Sound icon

Right-click the in your taskbar and select Sound Settings or More sound settings . Go to the Recording tab.

Corrupted Game Files

: Incomplete installations or corrupted .dll files (like mss32.dll ) can prevent the MSS library from loading correctly.