* How did you enable the sharing?

Using the config page: see attached image.

I'm using exactly the same configuration and OS in 3 computers: 2 amd64
and the arm64 Raspberry Pi. In the amd64 ones VNC works. It only fails
in the arm64 Raspberry Pi.

* The default protocol and suggested one is RDP, did you try if that
works better?

In my case RDP just doesn't work in any of my machines (neither amd64
nor arm64). The RDP server gives these errors when I try to connect:

abr 25 19:06:26 fpglinux gnome-remote-desktop-daemon[4496]: [19:06:26:631] 
[4496:5565] [WARN][com.winpr.negotiate] - AcceptSecurityContext status 
SEC_I_CONTINUE_NEEDED [0x00090312]
abr 25 19:06:26 fpglinux gnome-remote-desktop-daemon[4496]: [19:06:26:731] 
[4496:5565] [WARN][com.winpr.negotiate] - AcceptSecurityContext status 
SEC_I_COMPLETE_NEEDED [0x00090313]
abr 25 19:06:26 fpglinux gnome-remote-desktop-daemon[4496]: [19:06:26:731] 
[4496:5565] [ERROR][com.winpr.sspi.NTLM] - Message Integrity Check (MIC) 
verification failed!
abr 25 19:06:26 fpglinux gnome-remote-desktop-daemon[4496]: [19:06:26:731] 
[4496:5565] [WARN][com.winpr.sspi] - CompleteAuthToken status 
SEC_E_MESSAGE_ALTERED [0x8009030F]
abr 25 19:06:26 fpglinux gnome-remote-desktop-daemon[4496]: [19:06:26:731] 
[4496:5565] [WARN][com.freerdp.core.nla] - CompleteAuthToken status 
SEC_E_MESSAGE_ALTERED [0x8009030F]
abr 25 19:06:26 fpglinux gnome-remote-desktop-daemon[4496]: [19:06:26:731] 
[4496:5565] [ERROR][com.freerdp.core.transport] - client authentication failure
abr 25 19:06:26 fpglinux gnome-remote-desktop-daemon[4496]: [19:06:26:731] 
[4496:5565] [ERROR][com.freerdp.core.peer] - peer_recv_callback: 
CONNECTION_STATE_INITIAL - rdp_server_accept_nego() fail
abr 25 19:06:26 fpglinux gnome-remote-desktop-daemon[4496]: [19:06:26:731] 
[4496:5565] [ERROR][com.freerdp.core.transport] - transport_check_fds: 
transport->ReceiveCallback() - -1
abr 25 19:06:26 fpglinux gnome-remote-de[4496]: Unable to check file 
descriptor, closing connection

These errors may be related to this problem that I think is not solved in the 
Ubuntu current freerdp version:
https://github.com/FreeRDP/FreeRDP/issues/7722

** Bug watch added: freerdp-issues #7722
   https://github.com/FreeRDP/FreeRDP/issues/7722

** Attachment added: "Remote Access config"
   
https://bugs.launchpad.net/ubuntu/+source/gnome-remote-desktop/+bug/1970139/+attachment/5583584/+files/Captura%20desde%202022-04-25%2019-31-43.png

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https://bugs.launchpad.net/bugs/1970139

Title:
  VNC Connection doesn't work on arm64 (Raspberry Pi 4 8Gb) in Ubuntu
  22.04 LTS

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