Viewing desktop from different computer same settings, won't connect

I have a desktop computer with no keyboard or screen. The only way to access
it is via remote. It's set up to run TightVNC server on startup and I've
been successfully accessing it via a laptop for about a year.

Unfortunately that laptop died so I am now using TightVNC viewer from a
newer laptop. I managed to get the settings used from the old laptop's hard
drive so I know they are identical. Even manually set the IP and gateway on
the new laptop to same as old one. And I added an exception to the laptop so
it accepts TightVNC. The desktop has no firewall.

When I connect the Ethernet cable and run TightVNC viewer with the settings
that previously worked for the last year it returns an error:

192.168.1.1:5900 - TightVNC Viewer
Error in TightVNC Viewer: No connection could be made because the target
machine actively refused it.

The only difference between now and when it used to work is the version of
TightVNC viewer is 64bit and the old version was 32bit.

When I ping the desktop on 192.168.1.1 is responds immediately with 0% loss.
So, I'm out of ideas. I don't understand why the desktop would refuse to
connect to a computer with the same IP address it used to connect to just
fine.

The only other thing I could try would be to uninstall TightVNC 64bit and
try TightVNC 32bit but I don't see any logical reason why that would make
any difference.



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