[2.0.73] Multiplayer game list fails to load, shows JSON parsing error 520 instead
Posted: Fri Feb 13, 2026 2:52 pm
Since about two days ago (Feb 11th) the list of MP games fails to load. This never occured earlier and I could join MP games the days before without issues.
Now I suddenly get the following message instead:
My OS is pretty old (Windows 7) and I suspect that it might be at least partially responsible for the issue, though I (should) have all available updates installed.
It is not purely my system causing the connection issue, since I am able to read the server list JSON in my browser (at multiplayer.factorio.com).
I attached the log file and a screenshot of the error message.
There are several suggestions for this (or a very similar) issue in this thread:
[Windows 7] Error trying login in game "InitializeSecurityContext failed: SEC_E_ILLEGAL_MESSAGE"
I have tried them all, but to no avail. My OS was up to date before anyways.
Via M45-Science: Factorio Server Browser I was able to figure out an address of a server and could successfully connect to it via direct connection in factorio. Hope this info helps to isolate the problem.
Now I suddenly get the following message instead:
Code: Select all
Download failed (status code 520): failed to parse JSON response: Unexpected character (s) at ?:1It is not purely my system causing the connection issue, since I am able to read the server list JSON in my browser (at multiplayer.factorio.com).
I attached the log file and a screenshot of the error message.
There are several suggestions for this (or a very similar) issue in this thread:
[Windows 7] Error trying login in game "InitializeSecurityContext failed: SEC_E_ILLEGAL_MESSAGE"
I have tried them all, but to no avail. My OS was up to date before anyways.
Via M45-Science: Factorio Server Browser I was able to figure out an address of a server and could successfully connect to it via direct connection in factorio. Hope this info helps to isolate the problem.