Worked now, could install a game.

not working here. can't get cyberpunk or witcher 3 to download. says server error.

I tried their support system.
At some point it requests an error code (e1 ... e9), but we do not even get an error code.

Finally I downloaded the install files from the library and installed it in the usual place on my hard disk (the one referenced in the default settings of Galaxy).
Then Galaxy automatically found it and added it to its list.

Still not working on my end.

Doesn't work for me either, Says 'Server problem'

In the log i can see :

'Cannot fetch installation data for product 1423049311: Error Message: Could not find GOG EULA for 1423049311'

product 1423049311 is Cyberpunk 2077

have the same problem I got one game to download but the others wont

the address (put https:// before each line, i can't post full address)
content-system.gog.com:443/open_link/download?path=content-system/v2/eulas/eula_en-US
does not work, should be replaced with
content-system.gog.com/open_link/download?path=content-system/v2/eulas/eula_en-US

The first link is what GOG galaxy uses causing the error.

That doesn't change the fact that some games will show up in Galaxy if you install through Galaxy only.
They won't show up as installed if installed via an offline installer.

I tried downloading a manual using GOG Galaxy 2.0 and it did not work.

I noticed that Clownski_ is on the case. Thanks, Clownski_.

where do I put this?

WHERE DO WE PUT THIS?!

Which games are you talking about? I would like to try that.

I know that happens with some very old games, but I didn't experience this for years.
In the beginning, games had the wrong names in the program list, but that has been corrected a long time ago. Ever since they changed the installer structure, everything works like a charm.

The problematic 443 port have been fixed.
It's working right now for me

Well, just the basics: It basically avoids the problem of a limited adress range. There are way more devices in the world than there are possible adresses in IPv4. To solve that, ports are used to send a response to a specific client. Your internet router must have something to decide if the incoming data is supposed to go to your smartphone or your PC.
IPv6 offers a much wider adress range and allows direct communication without additional ports (your computer and your smartphone both connected to your router will have different IPv6 adresses - if supported).
Galaxy does not require IPv6.


Edit: Of course I forgot to mention subnets, but I guess these are self-explanatory.
And to those who know more about the matter than me: I hope I didn't say too much wrong, feel free to correct me.