qBittorrent official forums

I put v4.2 on each of my computers.
2012 Mac mini - Mojave
2016 16" MacBook Pro - Catalina

Latest versions of each OS.

Upgraded to v4.2 simply by replacing the apps themselves, not touching any associated files. Starting the apps is fine but new torrents do not connect. They just sit there. Deleting v4.2 and reinstalling v4.1.9, again, not touching associated files, all is great again.

Anyone else?

Hey man
Yep same here. I’ve switched to Vuze which works fine, until this is fixed.
With Love

Vuze is an extreme choice when one is otherwise happy with qBittorrent. It's a behemoth and not accepted by so many trackers.

Why not use v4.1.9?

Whatever is in the changelog that fixed whatever caused this issue - YAY! And thanks.