Winsock is an interface which allows Windows based applications to access Network Protocols like FTP, TCP/IP, Appletalk, NetBIOS etc… If the Winsock Installation in your computer gets corrupted, you will be able to connect to the internet, but there will be no Data Transfer, and hence, you will get errors like Page Cannot Be Displayed.
Command to reset Winsock: “netsh winsock reset catalog” in the Run dialogue Box
If you want to output the results of the winsock reset command, then modify that command to something like this: netsh winsock show catalog >c:\123.txt
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