Mfc7 1.dll is a dynamic link library file in Microsoft's basic class library. The system file mfc7 1.dll is an important file stored in the Windows system folder. It is usually created automatically during the installation of the operating system, which is very important for the normal operation of the system. Unless the user's computer is tampered with by Trojan virus or rogue software, resulting in the loss, missing or damage of mfc7 1.dll, it is not recommended for users to modify such files at will.