I have 2 remote workstations both using Windows 11 and both running same version 1.4.3.6 of UltraVNC as service. On one computer I can connect successfully but on the other it gives the error “This server does not have a valid password enabled”.
The ini file was initially different but I copied from one workstation to the other
now for sure are the same. Of course I restarted the service.
I unchecked the option “only servers with password” in vnc viewer but without change in behaviour.
When I inspect with Wireshark I can see similar traffic in both cases but after exchanging the protocol version in bad case from the workstation came 177 bytes for “Security types supported” containing the error message (instead of 16 bytes). After that packet the viewer send FIN packet to close the connection.
At first seems the vncviewer is closing the connection but because the error message is sent by the server, it is clear that the server is deciding that the password is disabled/invalid.
(There are no different VNC installations: when I change the password using the icon in system tray also the ini file is changed)
What is the solution to have access to both workstations?
