I'm having a problem with vista machines not being able to map network drives. The network drives are on MS SMB 2003 servers. When I try to map the drive, it says "Network path cannot be found".
What I do know: Network discovery is on, and servers are visible
I can ping the servers from the vista boxes, both with IP and using DNS/WINS names
The vista machines have been able to map them prior, it just started happening - no updates were installed on the vista machines as my predecessor screwed up WSUS. I manually updated one and it did not solve the issue.
I ran the windows online scanner safety.live.com and it "fixed" some registry errors and also did not fix some, but didn't give me any details as to which errors couldn't be fixed. No viruses/adware found.
No server updates have been installed since black Tuesday (May), the drives have mapped since then

anyone have any thoughts? thanks

oh,, and I turned off all firewalls to make sure that wasn't the issue.... it wasn't the issue

Are the routers/switches/hubs Vista compatible? If not, I'd suggest disabling the DHCP Broadcast Flag according to these directions: http://support.microsoft.com/default.aspx/kb/928233

After that I'd try disabling IPv6 to see if that helps (could be an issue with translation from IPv6 to IPv4). Also, the IP Helper service provides this service - and it's sometimes done through an IPNAT device (which may appear in your network devices).

nope didn't work
This is getting to be urgent since XP won't be readily available soon.

I have another symptom/clue to add to this. I discovered that if I connect the PPTP windows vpn (despite being on the network anyway), I can map the drives fine. Does that shed some light for anyone?