Winsock repair

There are two easy ways to determine if Winsock2 is damaged:

From the XP source files, go to the Support / Tools directory

Winsock Test Method 1
Run netdiag /test:winsock

The end should say Winsock test ..... passed

Winsock Test Method 2

Run Msinfo32
Click on the + by Components
Click on the by Network
Click on Protocol
There should be 10 sections if the Winsock2 key is ok
MSAFD Tcpip [TCP/IP]
MSAFD Tcpip [UDP/IP]
RSVP UDP Service Provider
RSVP TCP Service Provider
MSAFD NetBIOS [\Device\NetBT_Tcpip...
MSAFD NetBIOS [\Device\NetBT_Tcpip...
MSAFD NetBIOS [\Device\NetBT_Tcpip...
MSAFD NetBIOS [\Device\NetBT_Tcpip...
MSAFD NetBIOS [\Device\NetBT_Tcpip...
MSAFD NetBIOS [\Device\NetBT_Tcpip...

If the names are anything different from those in this list, then likely Winsock2 is corrupted and needs to be repaired.
If you have any 3rd party software installed, the name MSAFD may be changed.
There should be no fewer than 10 sections.

To repair Winsock2

Run Regedit
Delete the following two registry keys:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Winsock
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Winsock2

Restart the computer
Go to Network Connections
Right click and select Properties
Click on the Install button
Select Protocol
Click on the Add button
Click on the Have Disk button
Browse to the \Windows\inf directory
Click on the Open button
Click on the OK button
Highlight Internet Protocol (TCP/IP)
Click on the OK button
Reboot