Page 1 of 1
[2.0.55] Multiplayer doesn't work
Posted: Wed Jun 11, 2025 2:53 pm
by ctf_2fort
Server browser fails to show any games.
Code: Select all
Download failed (status code 520): failed to parse JSON response: Unexpected character (O) at ?:1
Direct connection doesn't work too
Code: Select all
Could not establish network communication with server.
The only server i could connect to is 82.71.41.83:34197 24/7 NIGHTMARE WORLD
Re: [2.0.55] Multiplayer doesn't work
Posted: Sat Jun 14, 2025 8:36 am
by terradus
i have same problem! please fix it!
I tried:
1) Checking the game cache (everything is fine)
2) Checking the antivirus and firewall (all necessary permits are available - for factorio)
3) Installing another version of factorio (it found 3 servers and there is no 520 error)
on v 2.0.55 i have a server in my memory (COMFY Mtn Fortress - 195.216.56.235:32101) and I can connect to it without problems, but it doesn’t display a list of servers, it gives error 520, exactly the same as the author of the topic. I also draw your attention to the fact that in other versions of the game I see a list of servers (if they exist in the version).
The actions I performed in the attached log:
1) Launched the game.
2) Opened the list of servers and waited.
3) Turned off the game and dumped the log.
The error that appears on the screen (520) matches the entry in the log:
Error HttpSharedState.cpp:175: CURL failed: code:28, 1c; Operation too slow. Less than 1 bytes/sec transferred the last 60 seconds
Re: [2.0.55] Multiplayer doesn't work
Posted: Sat Jun 14, 2025 1:30 pm
by eugenekay
eugenekay wrote: Fri Jun 13, 2025 11:05 pm
Error Code 520 indicates a Connection Failure, possible due to TLS Interception - Not a Bug in Factorio as such. You can try a VPN service or see if other API endpoints work - but you may be out of luck, sorry.
It is possible/likely that Version 2.0.55 added verification for the Multiplayer APIs in the client itself. You would still be able to play “Offline” on your local LAN, or directly connecting to a server with Verification disabled.
Good Luck!
Re: [2.0.55] Multiplayer doesn't work
Posted: Thu Jun 19, 2025 8:31 pm
by terradus
eugenekay wrote: Sat Jun 14, 2025 1:30 pm
eugenekay wrote: Fri Jun 13, 2025 11:05 pm
Error Code 520 indicates a Connection Failure, possible due to TLS Interception - Not a Bug in Factorio as such. You can try a VPN service or see if other API endpoints work - but you may be out of luck, sorry.
It is possible/likely that Version 2.0.55 added verification for the Multiplayer APIs in the client itself. You would still be able to play “Offline” on your local LAN, or directly connecting to a server with Verification disabled.
Good Luck!
I wrote 2 letters. One letter to RKN and the second letter to my internet provider. I received a response from RKN today at 14:12 Moscow time (I called the provider before the letter, and it was purely symbolic in nature to try to get the problem moving). I don't know which of them did what, but now everything works for me. I'm very curious if this works for everyone who had a problem before, or is it fixed only within my provider?