Select > Compatibility tab > Check Run this program as an administrator . Advanced Solutions
By following these recommendations and staying informed about potential solutions, Call of Duty players can minimize the risk of encountering the "Call of Duty exe err mss init failed 150" error and enjoy a smooth and enjoyable gaming experience.
Fixes broken DirectSound structures that block hardware queries. Toggle Run as Administrator .
: Outdated or incompatible audio drivers (particularly Realtek) may prevent the sound system from starting. Call of duty exe err mss init failed 150
Try launching the game with these command line arguments (in Battle.net/Steam):
: If running an older disk version, search your installation media for the mss32.dll file inside the setup folders, copy it, and paste it directly into the game’s root installation directory, replacing the existing file.
: If you recently changed admin settings, a residual registry entry might block the launch. In regedit , navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers and delete any entry for cod.exe that mentions RUNASADMIN . Select > Compatibility tab > Check Run this
A clean reboot can often resolve temporary driver conflicts.
Right-click the game in your Library > Properties > Installed Files > Verify integrity of game files .
: Right-click Call of Duty > Properties > Installed Files > Verify integrity of game files . Toggle Run as Administrator
This comprehensive troubleshooting guide explains why this audio initialization crash happens and provides step-by-step solutions to fix it. What Causes the MSS Init Failed Error?
(Optional) Check and select Windows 7 or Windows XP (Service Pack 3) from the dropdown menu. Click Apply and launch the game directly from the folder. 4. Replace or Re-register the mss32.dll File