A duplicate name exists on the network

[Guest]

Hello everyone

I'm trying to access Windows XP computers using a DNS cname which is
different to the computers NetBIOS name. When I access the computer using
its NetBIOS name everything works fine. When I tried to access the computer
using its DNS alias I received the error message ' a duplicate name exists on
the network'

The strange thing is, that I can cure this problem by creating the registry
key disablestrictnamechecking. What confuses me, is that this fix is only
supposed to be applicable to Windows 2000 server with a service Pack below
three.

Before I go ahead and create this registry key on all my machines I just
wanted to check that I will not inadvertently break anything

Cheers,

Bob

 

[Eric Cross [MVP]]

Greetings Bob,

Make sure the computer name is unique on all computers. Right-click My
Computer, and then choose Properties. Click the Computer Name tab, and then
click Change. Try changing the name and see if that fixes the problem.

_________________
Eric Cross
Microsoft MVP (Windows Networking)

 

[Guest]

The NetBIOS names are all unique.

Greetings Bob,

Make sure the computer name is unique on all computers. Right-click My
Computer, and then choose Properties. Click the Computer Name tab, and then
click Change. Try changing the name and see if that fixes the problem.

_________________
Eric Cross
Microsoft MVP (Windows Networking)

 

[Lanwench [MVP - Exchange]]

Hello everyone

I'm trying to access Windows XP computers using a DNS cname which is
different to the computers NetBIOS name. When I access the computer
using its NetBIOS name everything works fine. When I tried to access
the computer using its DNS alias I received the error message ' a
duplicate name exists on the network'

The strange thing is, that I can cure this problem by creating the
registry key disablestrictnamechecking. What confuses me, is that
this fix is only supposed to be applicable to Windows 2000 server
with a service Pack below three.

Before I go ahead and create this registry key on all my machines I
just wanted to check that I will not inadvertently break anything

Cheers,

Bob

Got any workstations/servers with two NICs?

 

[Guest]

Some, yes. But none of of the machines that I have tested have had more than
one network card. What is your line of thinking?

Cheers,

Bob

 

[Lanwench [MVP - Exchange]]

Some, yes. But none of of the machines that I have tested have had
more than one network card. What is your line of thinking?

If you have multiple LAN-connected cards, you can get this error - esp. if
you use WINS. Was just wondering if it might be related.