I've checked proxy settings, relogged into my account ingame and uninstalled and reinstalled but nothing changes.
Any help will be appreciated

Which mods trigger these errors for you? Could you email me (support@factorio.com) a wireshark trace of your network traffic when this error happens? https://www.wireshark.org/roscoe3804 wrote: ↑Wed Oct 05, 2022 7:38 pmYeah I can download mods from there and everything works fine. The in-game mod portal also doesn't let me download large updates.