Remmina VNC - how to automatically accept connection

I am trying to connect remotely from an Ubuntu 22.04 desktop to another Ubuntu 22.04 desktop via the internet through VNC on Remmina. The connection works finely, but in order to connect on the connected computer I have to click "accept" which I do not want, because the computer is unattended. How can I enable automatic acceptance?

Setup Gnome Remote Desktop with a password

Note: This has nothing to do with the Remmina on the local computer. You have to set it up in the remote computer.

This option is somewhat hidden. Go to the system Setup > Sharing on the left panel >

1. Turn on Sharing toggle at the right side of the top bar.
2. Click on the Remote Desktop to open the Remote desktop window.
3. Make sure the toggle the remote desktop connection is on.
4. Check the box for Enable legacy VNC Protocol
5. Click on the three dots ⫶ next to the Enable legacy VNC Protocol
6. Click on the radio button Require a Password
7. Make sure the the Remote Control toggle is on.

See the picture below:

The username and password will be at the bottom of the screen, not shown in the picture. You may change them.

I strongly advice everyone to set the remote access password to something long and random particularly if the remote connection is over the internet. You don't want some hacker to guess and get into your remote computer.

Save the usename and password in Remmina

If you don't want Remmina to ask for the username and password every time you try to connect you may save these within Remmina's Basic Tab. These are what you set in the Remote Desktop settings and can be different from your login username and password.

Hope this helps

On the remote computer you set the vino-server option for this.

Using dconf-editor go to /org/gnome/desktop/remote-access/ and toggle off the prompt-enabled setting.

Then restart vino-server