Hello,
What the 'Auto' setting does in connection properties -> Authentication is that it tries all authentication methods in the following order:
Custom (self-hosted) server security
Windows security
RU security
Single password
I.e. once the Viewer determines that the authentication method being checked is available, it uses it. That means that if you have multiple auth methods enabled, the ones that are higher in the list are used first.
For example, if you have Win Security and Single password enabled, Win Security will always be used. If you want to explicitly use a certain authentication method all the time, you should select it in the list.
Why can't we just set a default authentication method?
For IP and Hostnames it should default to windows security and when we try to connect to a Internet ID it should pick single password.
That indeed makes a good suggestion for inclusion in our wish list. The ability to choose a default authentication method depending on the connection type used, that is.
Currently we have to add the Internet ID to the address book and then right click and set it to single password every time.
You can use
default connection properties too.
Hope that helps.