I am trying to use vinagre (vncviewer type program) from Ubuntu 20.04 going to CentOS 7.9. I get prompted for the password. I enter it – then it says Authentication failed.

I can connect with this program to other windows and Ubuntu machines no problem. Just having issue with CentOS. I can use VNCviewer from CentOS
to CentOS.

What’s up ?
Thanks,

Jerry