Here is the story of how Mark fixed it the right way, and why you should too.
How to Fix "steam_api.dll is Missing" in Resident Evil 6 PC If you are trying to launch on your PC and are blocked by an error stating that steam_api.dll was not found or is missing, you are experiencing a common Windows system issue. download steam api.dll for resident evil 6 pc
Do not place the DLL in C:\Windows\System32 or C:\Windows\SysWOW64 . Modern Steam games look for the DLL only in their own game directory, not the system folder. Here is the story of how Mark fixed
Manages player achievements, cloud saves, in-game overlay, and multiplayer matchmaking. Modern Steam games look for the DLL only
incorrectly flagging and quarantining the file, particularly if you are using a modified or repacked version of the game. Safe Ways to Restore steam_api.dll Rather than downloading a standalone
How to Fix Resident Evil 6 Missing Steam_api.dll Error on PC