ERROR Game disconnected "port 3659 (UDP) is open." Issue

I believe the ports are hitting each other, How did you forward each PC? Last time i tryed BF4 on lan it was fail =/ 2 clients on PC could not play same time. There is away to change the port now i think^ forgive me i type as i look to ensure fast support time, then edit etc sumtimes or u kno adapt, get infos whatevers , how u forward all the ports? all 4 ppl been in squad same time and survived a match? if so funky =) Also if not a issue upto now, have u tryed resetting your router. Just unplug it 20 seconds and then back in, same with PC. This is such a epic fix in the IT industry =p 

Forgive me no BF installed atm, coming of a reformat. Its next , about to go reset ten or so times with updates: 

Right click on BF4 in origin. Click Properties 

Add this commandline

+clientport 232323

or

+clientport 23666

etc

This shld change the port. You will see via your firewall kicking up at the new rule. Offskies bck soon D 

thank you for the quick respons.  I had restarted modem several times last night and it had no effect.  I had also restarted my computer and the error still persisted.   as for how I was opeing the ports and doing port forwarding.  two ways.  I went into my router comcast router and opened all of the ports associated with battlefield 4.  I also went in and created exceptions on those same ports.  (meaning they router would just send data through them with out them being scrutinized by it's internal firewall.)  for the UDP protocol and TCP protocol for all of my gameing PC's and their static IP's.   and yes in the past I have had all 4 PC's running on different servers, same servers differnt squads and even same squad with no issues.

I have attempted to try the    +clientport 232323.    I have yet to attempte to play a game.  when I do I will be back with the results.

I doubt that will work since there are 65535 ports 🙂

Think that's a typo, so put +clientport 23232

NOTHING ever works for this error.  All these poeple saying do this do that and it worked for me... there is no proof of that.  What I do know is that I have never met anybody online or in meh clans that has NOT had this problem.  ANd it comes and goes all the way back to BF3 and BF4.  I've just had a bad case of it now for 2 week sand I'm really **bleep**'d b/c I have not been able to play a single minute and I've spent HOURS on "trying" to fix it.. OR hpping again for the 100th time that it just goes away on it's own li usually does.  For the life of me I can not figure why this is not officially addressed by DICE.  It's obviously a major flaw with networking or something that affects a lot of people.

Try this:  http://swisstechblog.blogspot.com/2015/02/how-to-solve-bf4-server-problems-3659.html

Hello

For Battlefield on PC, please enable the following online ports on your connection:

TCP: 80, 443, 9988, 20000-20100, 22990, 17502, 42127
UDP: 3659, 14000-14016, 22990-23006, 25200-25300

For specific instructions on how to open your ports, please visit http://www.portforward.com/ or contact your router manufacturer.

Also see this EA Help article for information on opening TCP or UDP ports: http://help.ea.com/en/article/opening-tcp-or-udp-ports-for-connection-issues/

I hope these tips help you.
If my advice has helped you, then do not forget to click XP.
Please mark a thread as solved if a post solves your issue.

Good luck.

nope