I have spent the last three days trying to trouble shoot a mapped drive/workgroup problem involving three systems on a home network. Everything operated fine until approximately four days ago, when I started to run into access problems with the mapped drive on one of the systems.
So, without further ado - here are the specs...
Three computers - A, B, and C - all three are WinXP systems, up to date on updates. Everything sits on a Verizon FiOS modem/firewall/router. System C has a second hard drive (160GB) that is serving as a file depository for the home network. All three computers are connected via a home workgroup (coincidentally - HOMEWORKGROUP). System A is a laptop accessing via wireless, system B is a desktop. All three systems use ZoneAlarm free and Norton AntiVirus2007. Systems A and B access the second hard drive on C as a mapped drive.
Problem - starting 3 days ago, systems A and B lost the mapping to the drive. Investigated network places and found that accessing system C was no longer possible through workgroup computers list - received the dreaded 'workgroup is not accessible. you may not have permission...' Matter of fact, A and B didn't see any computers in the workgroup. C, however, could still see and access A and B.
So, I tried renaming the workgroup - all three systems can see each other, and C can access A and B, but A and B cannot access C. In the process of restarting the systems though, I noticed that immediately after rebooting, C was open and accessible. Hey, problem solved! Until about 10 minutes after booting - then the mapped drive is dropped again.
I looked through the events viewer to try to determine what program may be affecting the mapped drive/access, but nothing jumps out at me. The problem currently remains the same - immediately after rebooting, all systems can communicate normally, until approximately 10 minutes after booting. Then C drops the mapped connections and cannot be accessed from A or B. C itself remains in contact with A and B though and can access both systems.
I have researched this and found all sorts of information about: NIC cards that shut down; improperly set DHCP settings, ZoneAlarm and Norton interference, and even some tips about adjusting the registry settings. So far - no dice.
I am out of ideas. Any help would be greatly appreciated.