VNC Viewers are View Only when connecting to Catalina on Login Screen

[tekfranz]

VNC Viewers can connect they are just limited to view only access on the login screen. If a user is already logged in the Viewers work mostly as normal.

I followed the steps in this article but Real Vnc Viewer only had view access. https://apple.stackexchange.com/questions/339114/allowing-vnc-to-control-computer-under-10-14-mojave

Mac to Mac Screen Share sessions work fine.

 

[tekfranz]

I figured out the issue. The solution to getting a View Only lock screen when using a VNC Viewer to connect to Mac OSX Built-in VPN is to:

1. Go to Screen Sharing --> Computer settings and un-check the two boxes. THe first says Anyone may request permission to control this screen. The second says VNC viewers may control this screen with a password. Both of these must be unchecked. (the opposite of what you would expect.)
2. For security in the lower section set it to allow access for only the users you select.

In summary this must be a bug, because enabling the VNC Viewer setting is supposed to allow you to use VNC to connect to your MAc. In reality disabling these settings actually allows you to connect.

Thanks to CullenJ and BrandenRaider int his thread https://apple.stackexchange.com/questions/342161/macos-mojave-remote-access-login-screen-stuck-on-in...

Click the Computer Settings button and Disable these:



After disabling these boxes in Computer Settings, set your permissions for the VNC user based on a Mac User Account:


This should enable what is known as Apple Screen Sharing which makes the user enter both a username and password.