To fix the steam_api64.dll (or steam_api64r.dll ) missing error in Call of Duty: Black Ops 3
Navigate to the _CommonRedist folder inside your Black Ops III installation directory. Run the installers for and vcredist . To fix the steam_api64
, you should first try verifying your game files through Steam , as this is the most reliable way to restore missing official files. If you are using a non-Steam version, the error is often caused by antivirus software quarantining the file as a "false positive". Top Verified Fixes : Open your Steam Library. To fix the steam_api64