: Often caused by Steam failing to deliver files correctly or antivirus blocking the game's startup. Missing Dialogue/Voices
The first step is to have Steam automatically identify and replace any missing or corrupted files. Open your and right-click on Prototype 2 . prototype 2 missing files
In extreme cases, the Windows Registry loses the path to your game install. This is rare on Steam (which uses manifest files), but common on cracked or manually installed copies. : Often caused by Steam failing to deliver
After adding the exclusion, go back to and verify the game files again to force Steam to redownload the files your antivirus deleted. In extreme cases, the Windows Registry loses the
Select , then navigate to the Installed Files (or Local Files ) tab.
Visit the Steam Community Hub for Prototype 2 or the subreddit r/PrototypeGame. Search for your exact missing filename—chances are, a pinned thread has a direct download link to the exact file version you need, posted by a developer or veteran modder.