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Computer has Mavericks 10.9.5.

Chrome, Firefox, and Safari all do not connect to websites though the network is clearly connected.

***** EDIT: Browsing works in safe mode *****

I've read many articles and tried the following solutions:

1) Set DNS servers to Google DNS and open DNS.

2) Reinstalled operating system through the internet recovery. The internet for the recovery worked as expected, so this issue is something specific to browsing.

3) Added Chrome, Firefox, Safari to mac firewall

4) Removed System Configuration folder from library/preferences

5) Disabled McAffee antivirus put on by work IT

6) Ran McAffee scan and found nothing

7) Renewed DHCP

Anyone have any ideas?

Thanks in advance!

  • Run network utility & see if you can ping stackechange.com &/or google.com If no, see if you can ping 104.16.14.128 & 216.58.208.46 – Tetsujin Aug 8 '15 at 12:24
  • I'll do that straight away. I forgot to mention, that browsing works in safe mode and I'm using the subject Mac currently. I'm going to have to log into regular mode then back into safe mode in order to post the results, so it will be a few minutes before I can tell you what happened. – Walter White Aug 8 '15 at 12:28
  • Ping worked for all four. No problems – Walter White Aug 8 '15 at 12:44
  • So it's either a port or an app block... Check without firewall. Check for presence of LittleSnitch, which is a user Firewall if you don't know it. Maybe test https addresses like iforgot.apple.com to see if that can get through. Or maybe try Terminal nc -v portquiz.net 80 [or 8080, 443 etc]to see if a port is open [you appear to need to quit that after each query with Ctrl/c or subsequent queries go silent] – Tetsujin Aug 8 '15 at 12:56
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    If you can connect in Safe mode, then it means something is getting loaded after boot. Two usual culprits are kernel extensions, and Launch Agents/Daemon. Try kextstat | grep -v com.apple, and launchctl list | grep -v com.apple, to list those, respectively. Find anything you don't recognise? Like @Tetsujin said make sure you have any reverse firewall app like Little Snitch configured properly. – user14492 Aug 8 '15 at 16:30
1

Turns out that HBSS was preventing browsing due to not having the latest Mcaffee updates.

Thanks to all who helped me through this!

1

I had my iMac in storage for one year and when I started it up again although I could see that the wifi is connected I could not browse the internet. I contacted Apple Support and after deleting the contents of the folders below, the problem was solved.

Folders the contents of which were deleted are listed below:

~/Library/LaunchAgents

~/Library/LaunchAgents

~/Library/LaunchDaemons
  • Perfect!!! After many tried in different way but no hope but this one help me, thanks Ahmed Azam. – Nhu Phan Jan 24 at 3:31
0

I have experienced for a few days the same issue on MacOS Sierra (10.12.5). No one of the suggestion found on internet seemed to work.

Finally, while installing the "Little Snitch 4 Public Beta" to check firewall trouble, the browser functionality suddenly springed back. I also choose to 'force quit' the installation to avoid to shut down or restart my Mac.

I guess that the Little Snitch installation overwrited some files, resolving the issue, without ever have to restart browsers or computer.

0

Turns out my AV had entered a proxy that was blocking my connections.

It might be worthwhile to check: System Preference > Network > Choose your connection > Advanced > Proxies > remove any active proxies

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