I've been wrestling with this issue for a couple of weeks now. I have a client who has Server 2003 R2 in a workgroup evironment. Every workstation can connect to it and open up the shared folder.
However, all the XP machines, and only the XP machines lose connection to the server intermittently, the past couple of days they've been losing internet connection as well. I've set the troubled workstations i.p.'s statically and pointed it's DNS to the server which we set up as a DNS server.
I've tried tirelessly to find a solution to this, but seems like every solution that I find online that is implemented has not resolved the issue.
I've tried to modify a few registry settings on the server (AutoDisConnect, created KeepConn under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Service\lanmanworkstation\parameters) and set the value to 65000)
I've even modified the registry setting for forcing the Server to be a "Master Browser" and disabled the service on the workstation.
The workstations have still been dropping their connections to the server, simultaneously. Please help me to resolve this most frustrating issue!!! Thanks in advance fellow techies :)