I've been in network hell for about a week, now. I started this project as just a wipe, reinstall, and update of Windows XP on a friend's Dell Optiplex 755 desktop. Everything looked like it was going to be a problem-free favor that I've done many times for other friends.
Unfortunately, it has been everything but, problem-free. First, I couldn't get the wireless network connection to connect once I installed the Belkin Wireless Adapter and drivers, then I downloaded and installed XP SP3 and some Dell drivers. Next, I decided to try to Share Internet Connection from my Windows 7 machine to the XP machine. I was so happy when the XP machine actually opened up a live Internet browser. I immediately went to Windows Update to start updating the machine and it WON'T do any update downloads from Microsoft or Dell.
When I looked at the Events for what might be causing it I saw a TCP/IP error saying, "TCP/IP has reached the security limit imposed on the number of concurrent TCP connect attempts."
Now, networking is NOT my thing and I'm ready to go and jump off a cliff somewhere but, I can really use someone's help!
I've Googled and YouTube and I think they have gotten me as far as I can go.