Some third-party program will rewrite Windows TCP/IP protocol if you install such a program onto your computer. For rare reason your computer will lose network connection if you uninstall the program incorrectly.

If you are not a computer technician, please do not feel frustrated, you can do with the following steps reset winsock, so easy!

1. Click the Start button
2. Type ‘cmd‘  in the Start Search text box.
3. Press ‘Enter‘ key  to run Command Prompt. , if you are use windows Vista/7/8, please press’CTRL+SHIFT+ENTER’ to run the Command Prompt as administrator.
4. Type: netsh winsock reset in the Command Prompt shell, and hit Enter.

5. Restart the computer

6. If you can not enter Windows due to a winsock error, please start Windows with The safe mode, then use the command to reset winsock, and then restart Windows with normal mode.
Hope this will help you.