I had the pleasure of setting up a small network workgroup with 4 windows 7 ultimate pc's and 3 xp professional pc's. 1 of the windows 7 pc's became the server and successfully shares folders to the other windows 7 pc's 24/7. The shares were created with the homegroup option. I used advanced sharing to create the share that would be accessed by the xp clients. All pc's are in the same workgroup. The xp client is using the same user/password as the windows 7 pc. The share works but after some time; the share becomes inaccessible. IF I reboot the windows 7 server; the share becomes available; only to disappear some time at the computers choosing. I've pulled my hair out, far to long over this. Any idea's put there?