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Can't connect to mozilla.org


I am having issues updating my Adobe Flash plugin as it's and supposedly vulnerable to security issues and needs updating.

When I click "Update Now" I get 'Server not found' for https://addons.mozilla.org/en-US/firefox/blocked/p156

When I try to "Plug-in Check" I get 'Server not found' for https://www.mozilla.org/en-US/plugincheck/ as well.

I have tried this on my work computer and I can connect fine from the same IP.

I have ran every malware/virus protection software out there and they have found nothing.

Please help!

Additional System Details

Installed Plug-ins

  • Google Update
  • Shockwave Flash 11.7 r700
  • Next Generation Java Plug-in 10.25.2 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • NVIDIA 3D Vision plugin for Mozilla browsers
  • NVIDIA 3D Vision Streaming plugin for Mozilla browsers
  • GEPlugin
  • 0.3
  • 5.1.10411.0
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.3


  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:22.0) Gecko/20100101 Firefox/22.0

More Information

  • Top 10 Contributor
  • Moderator
10749 solutions 96724 answers

It is possible that your security software (firewall, anti-virus) blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.


Question owner

Hi there, and thanks for the reply!

I do not seem to have any rules listed for Firefox within my Firewall.

Previous to today, I was running Firefox 19 and I had the same issue. I downloaded the version 22 on a different computer, saved it to a flash drive and installed. The issue remains, and hence the opening of this thread. I have reviewed and abided by the links you supplied, however, I cannot seem to find proper resolution.


Question owner


Still having this issue and I remain flabbergasted.