The same port can be "open" in the sense that a program is waiting for connections to that port, but "closed" in the sense that a firewall blocks those connections, and vice versa.) However, if you connect out, those other hosts need to have the necessary ports allowed in their firewalls. With P2P connections that can easily become a problem

Check if Your uTorrent Listening Port is Open. If uTorrent is currently open, you will need to completely close it at this time. Make sure that the green uTorrent icon is not still hiding in your notification area (next to your clock). If it is, right click on it and choose "Exit". Optimize Your uTorrent Experience (14 Easy Hacks) Apr 21, 2020 [How To] Port Forward For uTorrent Tutorial - YouTube May 19, 2014 utorrent says that port is not open? | Yahoo Answers Aug 09, 2008

Mar 19, 2008

Common Problems & Fixes For Port Forwarding |™ Nov 15, 2019 How to open uTorrent ports to get maximum download speed Open uTorrent, click on the Options menu at the top left and choose Settings. Alternatively, you can quickly access the screen by using the CTRL + P key combination. Once you have done this, click on Connect and find the port used by uTorrent to connect to the Internet in …

If you specify to uTorrent incoming port 443, it can't receive any incoming connection, because that port is reserved for VPN connections with clients, like 53 and 80. In very populated swarms, anyway, you might not notice any significant performance difference, as long as you are not the initial seeder.

Port is not open - Troubleshooting - µTorrent Community Forums Aug 01, 2014