Right-click CoD2SP_s.exe (single player) or CoD2MP_s.exe (multiplayer) > Properties > Compatibility > Check "Run this program as an administrator" > Apply. Old DLLs often require higher privileges to hook into audio hardware.

If you see mss32.dll, select it and choose or Allow .

Here is a comprehensive guide to fixing the issue and getting back into the action. 1. Verify Integrity of Game Files (Steam/Digital)

: Reinstalling the game is the most reliable way to restore system files.

The MSS32.dll missing error can occur due to several reasons:

Click . Steam will scan for missing or corrupted files and automatically redownload mss32.dll . Solution 2: Reinstall the Game (Non-Steam/Disk Version)

Follow these solutions in order. The first solution is the most common fix. Solution 1: Reinstall or Verify Game Integrity (Steam)

The file was corrupted or deleted during a game update or crash.