The Specified Network Name is No Longer Available?

Question

we have 2 windows 2003 domains... For now lets call them domain1 and domain2.

I have an XP computer on a windows 2003 domain2. when I try and copy a file from a share on the server in domain1, it starts to copy.. but then if I try and access the same share from another computer in domain2, the first computer loses connectivity to the server.

Basically it means only one person can copy a file to / from the server at a time... any ideas as to what would cause this??

1. domain2\computer1 tries to copy a file from domain1\server1\sharename
2. domain2\computer2 tries to open the share: domain1\server1\sharename
3. domain2\computer1 loses connectivity with an error message:

The specified network name is no longer available.

turns out there is a firewall between the two domains.. and whne you connect with one to the other, they share some SID or something on the firewall and this causes one connection to kill the other.

Answer 1

Give Conscienta a call at 202-536-5784. They can fix most network and computer related issues, and sometimes they can do it over the phone remotely.

Answer 2

Several possible issues. First, are you trying to telnet or remote access and have limits set on server1 in terms of the number of remote connections allowed? Second, do you have a physical network issue, such as a bad switch, hub, NIC, cable, etc.? If you've got a poor physical connection the collisions of multiple accesses could cause a crash. You might start with a new NIC card in the server... Third, do you have performance issues on server1? Inadequate disk, RAM or processor resources that "max out" with multiple connections? Fourth, what type of file are you trying to access? If it is being accessed by one user, does that "lock out" other users, or is it capable of multiple user access? Fifth, do you have volume shadow copy enabled on the volume? Enabling this may resolve your problem. Sixth, do you have DFS (distributed file system) enabled? This is supposed to be Microsoft's wonder toy, but we've always experienced hiccups with it.
There are several other possibilities, but these are the first that come to mind.