Not able to access Internet in browsers on Mac but can access everywhere else

I am still facing the issue in Mountain Lion also.

But that is the OS i am using it from past1 year with the same wifi, i don't have any problems with it.

after installing the Mavericks i am facing this wifi disconnection, even in Mountain Lion.

i am able to access the same wifi in my Ipad & android phone without any problem. able to access all the websites. if i use my mac not able to access some websites ,for this i need to disable wifi & reenable it, then i can access it.

Please provide thoughts.

I just installed Mavericks, and I am also having the same problem of not being able to get onto my wifi network that was working just minutes ago. So regretting having done this.

I just had this problem with my iMac on a cat5 connection at work. After a lot of cussing and restarts, I turned off Mailtab for Gmail app and seems to have fixed it. So try turning off third party apps to see if one of them is the culprit.

Same problem for me. Other Apps accessing internet but none of my three browsers could....

Though, strangely, could access Google search results and Facebook!!! Everything else gave an error.

Been on vacation for a week after I upgraded (yes, I know I should have waited) but IIRC, Mavericks reported an error/problem with Sophos after the upgrade. I switched to Avast at the time. But I think I subsequently then updated Sophos.

Uninstalling Sophos appears to have worked for me :-)

Two hours of my life I won't get back.

Much thanks for the help.

I'm also having this problem but don't have Sophos or any other form of firewall on the machine (OS X firewall is off). Simply, the browsers stop connecting to anywhere and give an instant unable to connect error (I don't think they even try), whereas I can access anything via traceroute or other programs. If I reboot it works again for a while.

There must be more to this than Sophos, as this is almost a clean install of Mavericks.

i had the same issue after updating. but a few hours later. at first i also reproduced every step, suspecting it could be due to OSX 10.9 or firewall settings.

i also did not have sophos installed and everything else concerning internet connection worked, except browsers. until i then noticed that google worked in chrome, only other pages did not.

finally it turned out, that i had also installed Kaspersky Internet Security that day, and deactivating Kaspersky completly solved the behaviour.

so i reckogn everyone should first check if he installed or updated any antivir software 🙂

It happed the same with me, we faced the no internet issue on 10-20 Mac Book Air (Mavericks). We put in all of experience and experts on it. Some of them cleared PRAM and it worked, but after few days again browsing stopped, Someone formated the Macbook and it worked but after few days it happened same. Since we have full cover support we returned the laptop to apple support they did something and gave it back but it also never lasted long.

After few month I found Sophos web protection causing this. Still I have to make sure but I think it is Sofos Antivirus settings which cause the big blunder.

It happed the same with me, we faced the no internet issue on 10-20 Mac Book Air (Mavericks). We put in all of experience and experts on it. Some of them cleared PRAM and it worked, but after few days again browsing stopped, Someone formated the Macbook and it worked but after few days it happened same. Since we have full cover support we returned the laptop to apple support they did something and gave it back but it also never lasted long.

After few month I found Sophos web protection causing this. Still I have to make sure but I think it is Sofos Antivirus settings which cause the big blunder.

Sorry I forgot to mention 10-20 Mac book Air out of total 500 Plus laptops.

I have the same Problems. Using Safari didn' t work. Using Win7 with Parallels works. Deinstalling Sophos solved the Problem on MacOS.

This solved my problem too

I have just had the same problem. Only I did not have Sophos installed either. However, I had Avast installed. Uninstalling it resolved this issue for me.

Glad I stumbled upon this thread. Thanks for pointing me in the right direction 🙂