Dota 2 > General Discussions > Topic Details
Lexdiamond Oct 9, 2012 @ 9:51am
#cef_error_header-138
sometimes when i start dota i get this error on a lot of the tabs usually all but the play or watch tab i know how to fix it i just have to restart steam just thought i throw this out there here is the full error that it's showing me

#cef_error_header-138

#cef_unknown
Showing 1-15 of 17 comments
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ZeroFrosty Oct 20, 2012 @ 5:12am 
try to reinstall the anti virus program! cuz the new update in dota 2 have a conflic with your dota 2.. then restart the pc and it go check your dota 2 again and if it works try to install the anti virus again :)

ps.. check your firewall also.. close that and check your gateway for UPnP and turn it off :)

ZeroFrosty Oct 20, 2012 @ 5:12am 
conflic with your anti virus program*
Fraer Mar 13, 2013 @ 8:28am 
Doesn't work. I'm running Norton 360, i will not Reinstall it, because for one it is not the problem.

Check firewall, does that mean it needs to be OFF or ON?...
[ACE] VotaVader May 4, 2013 @ 3:59pm 
I found I got this error when my Norton 360 software got an update. I went to the Firewall Management of the antivirus, and under the Program Rules, set dota.exe and steam.exe to "Allow" (allow all traffic). That fixed the problem for me, and it might be the same with other antivirus/firewall software.
Kurosowa May 7, 2013 @ 9:08am 
i have same error, i cant get in to store. i closed my firewall but still don't works
[ACE] VotaVader May 7, 2013 @ 7:26pm 
But can you play matches? What kind of firewall do you have?
Vick May 15, 2013 @ 9:14am 
Having this problem now, can't buy a compendium T_T
Rage Me a River May 15, 2013 @ 10:07am 
Its nothing to do with AV or firewall, never disable security because of what 1 random person says. I have never had a problem with the shop until now. Its not just you with the problem OP.
Vick May 15, 2013 @ 5:04pm 
I just restarted Dota 3-4 times and it started working randomly.
Insta_Kill Aug 9, 2013 @ 7:21pm 
i have my same problem, everytime I go to blog, update, etc, it shows like that, please help.
Skitten Sep 7, 2013 @ 9:20am 
322
parrington-bear Oct 5, 2013 @ 7:02pm 
I had this problem, so i checked my AntiVirus Software and Dota 2 was blocked in my Firewall settings, i allowed access from Dota 2 and it works fine now. Hope this helps you :D if not dont hesitate to add me and i can try and solve your problem :)
leHos x3 Oct 6, 2013 @ 3:39pm 
oye yo tenia ese problema pero me di cuenta ke era por el antivirus norton porque lo elimine y funciono sin ningún problema
ziaDeh Oct 11, 2013 @ 5:19am 
please i need help !! #cef_error_header-138
[ACE] VotaVader Oct 11, 2013 @ 8:17am 
Did you check your firewall/antivirus settings for Steam and Dota like is said above? It has solved the problem for some people.
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