Commands to reset TCP/IP and Winsock in Windows

Click Start, Run, type CMD / alternatively you can find windows Command Prompt shortcut under Programs, Accessories (right-click on the shortcut and run it as Administrator if you are not logged on as one)... Execute following commands:

1. netsh int ip reset logname.txt
2. netsh winsock reset

Reboot your computer after exiting command prompt!


Note: Microsoft reference article with automated Fix It solution here