What is System.dll?
System.dll is Microsoft .NET Framework.
This file is part of Microsoft .NET Framework. System.dll is developed by Microsoft Corporation. It’s a system and hidden file. System.dll is usually located in the %WINDOWS% sub-folder and its usual size is 3,182,592 bytes.
Important: System (a virus, trojan or worm) can mask itself as System.dll. Scan your computer with Auslogics Antivirus to make sure it's not infected.