Dota 2 > General Discussions > Topic Details
Captivelemon Aug 17, 2013 @ 4:35pm
Unable to establish a connection to server...
I just moved from California to Chicago into a small studio and I really wanted to play dota. As I plugged in my ethernet cable to my computer and launched dota 2, I simply could not (and still can't) connect to a game. I keep receiving this error.

Disconnected from server.
Unable to Establish Connection to server.

I can connect to CS:GO matchmaking but I am unable to connect to dota 2 matchmaking or watch a live game.

I can connect to bot matches...

I have tried port forwarding/dmz zone/connecting directly to the building internet but nothing has been working.

My internet is supernova networks and I think they lease from comcast but I'm not sure...

Showing 1-15 of 23 comments
< >
Captivelemon Aug 17, 2013 @ 5:39pm 
I also can't watch any twitch stream...
ES_z3phyrIth Aug 21, 2013 @ 3:36am 
http://www.youtube.com/watch?v=cZlWVeJyNJw

+clientport 80 didn't work..try 27k plus..it worked for me.
Captivelemon Aug 24, 2013 @ 10:23pm 
I tried every port for 27000. So I tried 27001, 27002, 27003... up until 27999.

I entered it like so:

+clientport 27001 +clientport 27002

Dota 2 is still not working. I think my ISP is blocking the ports or sone IP addresses. I guess I just have to change my ISP to resolve this issue.
☛DistincT☚ Sep 6, 2013 @ 8:21pm 
im having the same problem with u, Captivelemon. How to solve it ?
Captivelemon Sep 7, 2013 @ 12:31pm 
My ISP is blocking ports... I had to contact them and tell them which ports should be open for Dota 2. They opened the ports so now I can play Dota.
[Y-5]amichaic2 Sep 10, 2013 @ 7:22am 
having same problem, going to contact my ISP but i just need to know what ports does dota2 need to have open? what ports to tell my ISP to open?
[Y-5]amichaic2 Sep 11, 2013 @ 12:13pm 
It could really help if u could tell me what ports u told your ISP to open :D ty
Captivelemon Sep 12, 2013 @ 8:41pm 
27000 to 27999
单排偶坑430 Sep 12, 2013 @ 9:11pm 
I always have the similar issue as you do, but I quit like that when I am playing the game. And I can't reconnect any more.
KaZaT Sep 15, 2013 @ 12:47pm 
help valve please.....i need this game.....lot more to improve and too much stress to deal this kind of problem w/o your help....please help us with your mighty minds and grace!

lol i just want to play....need it badly
PutaKill Pariu Sep 17, 2013 @ 10:41am 
+clientport 80 work for me
Free Drinks Sep 17, 2013 @ 11:47am 
the weird thing is i cannot establish server connection from my computer since friday but on my dad's pc it runs smoothly as always.
KaZaT Sep 17, 2013 @ 1:17pm 
Originally posted by aGB.B-O'Conner:
+clientport 80 work for me

are using laptop or desktop computer?

i'm using laptop i3 window 7.....and +clientport 80 wont work
hope valve can find solution fast....lol
[Y-5]amichaic2 Sep 18, 2013 @ 1:40am 
So i called my ISP and told them to open the ports and now it works ! ty
KaZaT Sep 18, 2013 @ 5:50am 
what do you said to the ISP?
Showing 1-15 of 23 comments
< >
Per page: 15 30 50
Date Posted: Aug 17, 2013 @ 4:35pm
Posts: 23