So it is just me and the other user?
This will become a serious issue when a new update drops. I just wanted some feedback to try other avenues of resolution.

Just performed some more tests and this is related to the network and not the game itself. Please close the thread as this is not a bug.

Hello,

Here is a bug report for steam version of factorio, experimental version [0.17.32]. Currently, using the in-game mod portal to download mods or update existing ones is impossible. After reaching the ingame portal and trying to update mods, the game will prompt for account credentials ...

Hello,

I am facing the same issue. Login is accepted in the setting -> Other -> Currently Logged in. In the mod portal, the connection is reset when attempting to download and update mods, asking for the password again and sending me to the main menu.
Also, just finished verifying the game files, 3 ...

Cant wait for that blueprint, the concept looks promising and appeling!