rnr20.dll is a process belonging to the Windows Socket program . rnr20.dll is the DLL for the Microsoft Windows Sockets 2.0 TCP/IP name service provider.
Check that rnr20.dll is stable on your computer.

rnr20.dll should not be disabled, required for essential applications to work properly. It is highly recommended to run a FREE performance scan to automatically optimize memory, CPU and Internet settings.

Determining whether rnr20.dll is a virus or a legitimate Windows DLL depends on the directory location it executes or runs from. Click to Scan your PC including rnr20.dll to Detect any Security Threat.