Often, the easiest way to fix a legacy audio initialization code error is to adjust how the operating system handles the executable file. Step 1: Enable Windows Compatibility Mode
Right-click on the game's executable ( .exe ) file or its desktop shortcut and select "Run as administrator." This ensures the game has the necessary permissions to access all required system files and hardware resources. Call of duty exe err mss init failed 150
: For Modern Warfare (2019) and some other recent titles, deleting specific files in the game directory has proven effective. Navigate to your game's installation folder (e.g., ...\Call of Duty Modern Warfare ) and delete the bink2w64.dll and fileSysCheck.cfg files (located in the main subfolder). Then, run a Scan and Repair via your game launcher, which will re-download the correct files. Often, the easiest way to fix a legacy
: Click the Gear icon next to the Play button > Scan and Repair . Navigate to your game's installation folder (e
: In some advanced security setups, enabling Memory Integrity within Windows Security can cause conflicts with the game. Navigate to Windows Security > Device Security > Core Isolation details and try toggling Memory Integrity off to see if it resolves the issue.