So this is what I have learned since my first post.  If your Virtual Center is on a 64 bit operating system the "nsrvim" script will not install because it is only for 32 bit machines.  And Networker Engineers seemed to be under the impression no one would be using a 64 bit operating system ever!  7.6 does not have it either, so I guess maybe 7.7 will have it

I too am having the same issue. I am using NW 7.5 SP1 and after re-reading the admin guide, it states that the auto-discovery process calls a program called "nsrvim" from the virtual client server with Networker installed. However, the 7.5 SP1 client does not contain "nsrvim". The last version to contain this program was 7.4 SP2 that I have used.

So, I tried to go back to 7.4 SP2 on my virtual client server and when "nsrvim" runs I get an error that "liblocal.dll" cannot be found. It is contained in the same directory as "nsrvim" but apparently that is not the location in which "nsrvim" is looking. This was working before we updated to vSphere 4 and NW 7.5.

I'm confused as to the documentation still stating that the only command at this time that is used for auto-discovery but it is not included in the client or server installation.

Am I missing something? I haven't called support yet and that'll be my next course of action unless the community as found the solution.

Yep. I did some more digging and came to the same conclusion.

Very frustrating indeed.

Just so I understand, this could be any normal client running 32bit NW? It doesn't need anything special?

In the auto-discovery config, I would list this client in the "command host" section and it should work? You mention that it works with NW 7.6, what about previous versions of NW?

Thank you, samadm!!

It works, I just pointed the command host only to a 32 bit server and it all comes up with no issue.

That's great! . . . unless you don't have any 32-bit OSs around anymore :-( It's not like you can still install the NW 32-bit client on Windows x64 to get around all of this.

So I'm trying to dig around and find the Networker documentation that says "This is a really cool VMware backup feature - but is only available on old 32-bit Windows". Haven't found it yet . . .

What do you know. Finally found it on pg 527 in the 7.6 Admin Guide:

A binary, nsrvim, is used to facilitate communication between the NetWorker

software and the VMware VirtualCenter. The nsrvim binary can communicate with

the Web Services server on the VMware VirtualCenter using the secure HTTPS

protocol. The nsrvim binary is available only on Windows x86 platforms and is

included in the NetWorker for Windows 32-bit installation. All NetWorker servers

regardless of platform must contact a NetWorker client running in a Windows

environment for auto-discovery. By default, the NetWorker server contacts the

NetWorker client running on the VMware VirtualCenter.

Many thanks for this post. Just moved vCentre to a Windows 2008 R2 host and got this problem. Worked a treat.