What is System DLL?

System DLLs are essential components of the Windows operating system, designed to support critical functions that are required by multiple applications. These libraries contain code and resources that can be shared among various programs, enhancing performance and ensuring consistency across different software applications. Commonly included within this category are core system utilities, device drivers, and other fundamental services necessary for the smooth operation of the computer. System DLLs play a crucial role in managing hardware interactions, providing security features, and facilitating communication between different parts of the operating system and the programs running on it.