raspberry - VNC remote desktop control, refused to connect connect: connect refused

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This link: https://blog.csdn.net/caigen0001/article/details/100998598

window system using VNC viewer (note the difference between viewer and server versions)

Download the official website:

https://www.realvnc.com/en/connect/download/viewer/

raspberry systems may require realvnc-vnc-server:

sudo apt install realvnc-vnc-server

pi@pi:~ $ apt list --installed | grep vnc

WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

realvnc-vnc-server/stable,now 6.4.1.40826 armhf [installed]
realvnc-vnc-viewer/stable,now 6.19.325.40889 armhf [installed]

Appears, refused to connect connect: connect refused mistakes, because every time you need to start vncserver restart service

pi@pi:~ $ vncserver

pi@pi:~ $ vncserver
VNC(R) Server 6.4.1 (r40826) ARMv6 (Mar 13 2019 16:35:06)
Copyright (C) 2002-2019 RealVNC Ltd.
RealVNC and VNC are trademarks of RealVNC Ltd and are protected by trademark
registrations and/or pending trademark applications in the European Union,
United States of America and other jurisdictions.
Protected by UK patent 2481870; US patent 8760366; EU patent 2652951.
See https://www.realvnc.com for information on VNC.
For third party acknowledgements see:
https://www.realvnc.com/docs/6/foss.html
OS: Raspbian GNU/Linux 10, Linux 4.19.66, armv7l

On some distributions (in particular Red Hat), you may get a better experience
by running vncserver-virtual in conjunction with the system Xorg server, rather
than the old version built-in to Xvnc. More desktop environments and
applications will likely be compatible. For more information on this alternative
implementation, please see: https://www.realvnc.com/doclink/kb-546

Running applications in /etc/vnc/xstartup

VNC Server catchphrase: "Guitar exile motif. Oasis bicycle total."
             signature: 32-56-16-4c-2b-ba-54-72

Log file is /home/pi/.vnc/pi:2.log
New desktop is pi:2 (192.168.1.XXX:2)

Note the last line, you can log in 192.168.1.XXX:2 successful login (prompts XXX is because not want to expose IP address)