Thanks Dougie, but unfortunatelly I have more questions than answers
I don't know if something went wrong, but when I tried this
sudo nano /etc/cups/cupsd.conf I found only one
"listen".
That syntay looked very different to your "Listen 0.0.0.0:631 # change me" and therefore I am asking
# Allow remote access
Port 631
Listen /var/run/cups/cups.sock
Shall I change
"Listen /var/run/cups/cups.sock" into
"Listen 0.0.0.0:631" or the IP of my Win 10 Laptop?
I am not sure if 0.0.0.0 is something like a mask.
What else do I have to do at the "change me" lines?
<Location />
Order allow,deny
Allow @LOCAL # change me
(into what? my laptop IP adress or just delete @LOCAL)
</Location>
...
<Location /admin>
Order allow,deny
Allow @LOCAL # change me
(into what? my laptop IP adress or just delete @LOCAL)
</Location>
...
<Location /admin/conf>
AuthType Default
Require user @SYSTEM # leave me alone
(what do I have to do here?)
Order allow,deny
Sorry, but I am very unfamiliar with that stuff and I do not want to make a mistake and restore the SD again and again.