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Computers on same local network cannot see each other...

Ichinisan

Lifer
In an emergency, I had to purchase two Windows Vista systems to replace a couple of Windows XP systems. There was a hardware failure with one of the XP systems, and no local retailer had any systems with Windows XP.

Both Vista systems are identical. I knew that the software that had to be installed on the new systems was not Vista-compatible, so I installed XP in a virtual machine and copied the same virtual machine to both computers. I then renamed the virtual machines' "Computer Name" to be unique on the local network: "XP-CLIENT01" and "XP-SERVER01". I disabled the Windows Firewall on both, and even disabled the processes for the Windows Firewall, Security Center, Themes, and some other performance-degrading background services. From System Properties > Advanced > Performance Settings, I selected the option to "optimise for performance", disabling unnecessary eye-candy and making as minimal a memory footprint as it can. Vista is not going to be used. For the time being, because the setup was an emergency, Vista will boot up and the XP virtual machine will load automatically.

I have made sure that neither Vista machine even has antivirus software that might get in the way.

Both Vista computers can now share folders and they are visible to each other. They can both ping each other.

In one virtual machine on the server, it can browse/ping the client computer and the client's XP guest OS. In the virtual machine on the client computer, it can only see/ping it's own host OS and not the other.

What's going on?

More details coming soon, any help is appreciated...
 
It came to me. The two virtual machines had the same virtual MAC ID. Opened the .vmc file with a text editor and corrected...
 
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