text: no longer able to join ms windows xp pro to my network domain? i used to have my machine (winxp pro) joined to my domain but suddenly i'm no longer able to. when i wanted to check my network places the window gave me nothing (meaning no local area connection icon) it is just disappeared. i tried to join the computer to the domain (as it's currently joins itself to a workgroup) and whem i'm done with the procedures joining my computer to the domain (successfully) and do the restarts it gose back to the workgroup as if i've done nothing.  note: as i've mentioned earlier i can't view local area connection properties hence i can't see internet protocol (tcp/ip) protocol properties.  thanks please help check if your lan card is properly installed and switches. if your computer is connected to a dual-modem-router switch try to transfer it to the swithche where other computers are connected.  or see control panel to check if your wirefall doesn't block networking and also check the networking properties itself.