Official game discs, game updates, or Steam’s "Verify Integrity" tool.
Some antiviruses flag binkw32.dll as a false positive because it injects into game processes. Check your antivirus quarantine and restore the file if found. Then add the game folder to the antivirus exclusion list. Binksetvolume-12 Binkw32.dll Download Free Fix
If you are using a digital launcher, let it fix the file for you: Official game discs, game updates, or Steam’s "Verify