The word .DLL is the short form of Dynamic Link Library, .DLL files are composed of executable programs which are used only by other application or .DLL files. So, in short, you have to use a program to open or use a .DLL file. Although they cannot be opened or used Separately they are very much critical to the operation of any application which requires them. When a program is missing a .DLL file can cause Sudden Error or in some other cases, the Program might not be able to run on your system.
To Fix Missing or Corrupt msvcr120.dll, download the msvcr120.dll file located on this page. At the point when an application requires msvcr120.dll, Windows will check the application and framework folders for this .dll file.
To Fix Missing or Corrupt lame_enc.dll, download the lame_enc.dll file located on this page. At the point when an application requires lame_enc.dll, Windows will check the application and framework folders for this .dll file.
To Fix Missing or Corrupt d3dx9_43.dll, download the d3dx9_43.dll file located on this page. At the point when an application requires d3dx9_43.dll, Windows will check the application and framework folders for this .dll file.
To Fix Missing or Corrupt steam_api64.dll, download the steam_api64.dll file located on this page. At the point when an application requires steam_api64.dll, Windows will check the application and framework folders for this .dll file.