Mswsock.dll is a process belonging to the Windows Socket program. It is a module providing extensions for Winsock. This mswsock.dll file is required for proper and stable operation of operating system Windows. If it has been accidentally deleted or lost due to computer virus or registry error, you will see mswsock.dll error messages pop on your screen. Mswsock.dll errors is also common in Windows 7. If you have some Windows 7 problem, you can log on Windows registry to get your solution.

In computing, the Windows Sockets API, which was later shortened to Winsock, is a technical specification that defines how Windows network software should access network services, especially TCP/IP.

Common mswsock.dll error messages:
- "Mswsock.dll Not Found"
- "This application failed to start because mswsock.dll was not found. Re-installing the application may fix this problem."
- "Cannot find [PATH]\mswsock.dll"
- "The file mswsock.dll is missing."
- "Cannot start [APPLICATION]. A required component is missing: mswsock.dll. Please install [APPLICATION] again."

How to install mswsock.dll file?

1. Press Start and select Run
2. Type CMD and press Enter (or if you use Windows ME, type COMMAND)
3. Type regsvr32 mswsock.dll and press Enter
4. In the end, you should receive a message saying that your file was successfully installed or uninstalled.