When i log on my domain i am able to open my outlook using exchange server without a password, share my printer over the network, and access network files. After being logged on for a small amount of time the printer disconnects from the network (still available to me not network) my email prompts me for a password and any shared network files prompt me for a pass word. My computer is windows xp pro we have 2 other xp pro machines connected that do not have this issue. I also never loose my internet or ability to access any network files i just get prompted for a username and pword after a few minutes. Only way to fix the printer and issue is a reboot and relog in.1 person got this answerI do too