UltraVNC Server PC has Windows XP Professional and UltraVNC v188.8.131.52 using the
SecureVNCPluginARC4.dsm plugin and has been running happily for some time. It sits on the Internet and is accessed directly through an ADSL router.
Client 1 has Windows XP Professional and UltraVNC v184.108.40.206 viewer and connects without issues.
Client 2 is a Windows 7 32 bit laptop also with UltraVNC v220.127.116.11 viewer and can't connect at all. It uses the same
rc4.key as Client 1. I've opened the firewall for the VNC viewer, and I tried disabling the firewall altogether, but it didn't help. When it tries to connect it just sits at "Negotiate Protocol Version" and both "bytes sent" and "bytes received" stay at 0 which would indicate something is blocking the connection.
Using the Windows 7 laptop, I can make VNC connections on the local network.
I suspect this is more of a Windows issue than UltraVNC, but I'm not sure what to try next and I have no experience with Windows 7. How do I fix this problem?
You're right Randolf, it is making the initial connection. When I tried it without the plugin it immediately complained about an invalid protocol.
It is using the correct port, I use a VNC settings file that I copied from the working client.
I connected from the Windows XP client PC and checked Event Viewer. It shows the successful connections from this client, but shows nothing from the failed attempts by the Windows 7 client. Something must be preventing the connection from completing.
I plan to update the server next time I'm at the site, but it's a long drive to get there so for the meantime it will have to stay on the old version :-(