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Why do certain of my Firefox windows start getting "Server not found"?

  • 2 odgovora
  • 3 imajo to težavo
  • 20 ogledov
  • Zadnji odgovor od cor-el

dhg
dhg

Several times a day, one or more of my many Firefox windows gets into a state where it gets "Server not found" whenever I try to browse to a new URL. Internet Explorer is not affected.

I usually run Firefox with ~4 windows and more than a hundred tabs. The problem sometimes affects only one of those windows. Sometimes I can solve it by closing and then reopening the window. Sometimes I can solve it by closing and then reopening Firefox. Sometimes I can solve it by rebooting.

It's hard to say when exactly this started. The computer is only two weeks old.

I have experimented with the solutions discussed here (played with my firewall, verified that I am not using a proxy server, network.dns.disableIPv6, network.dns.disablePrefetch): http://support.mozilla.org/en-US/kb/Firefox%20cannot%20load%20websites%20but%20other%20programs%20can

Has anyone else seen this? Does anyone have any suggestions?

Several times a day, one or more of my many Firefox windows gets into a state where it gets "Server not found" whenever I try to browse to a new URL. Internet Explorer is not affected. I usually run Firefox with ~4 windows and more than a hundred tabs. The problem sometimes affects only one of those windows. Sometimes I can solve it by closing and then reopening the window. Sometimes I can solve it by closing and then reopening Firefox. Sometimes I can solve it by rebooting. It's hard to say when exactly this started. The computer is only two weeks old. I have experimented with the solutions discussed here (played with my firewall, verified that I am not using a proxy server, network.dns.disableIPv6, network.dns.disablePrefetch): http://support.mozilla.org/en-US/kb/Firefox%20cannot%20load%20websites%20but%20other%20programs%20can Has anyone else seen this? Does anyone have any suggestions?

Vsi odgovori (2)

Chris Ilias
Chris Ilias
  • Moderator

If you close Firefox, then start Firefox in Safe Mode, does the problem still occur? To start in Safe Mode, go to Help > Restart with Add-ons Disabled.

If the problem does not occur in Safe Mode, then you can disable your extensions one-by-one until you find out which one is causing the problem. See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems.

cor-el
cor-el
  • Top 25 Contributor
  • Moderator

Reload web page(s) and bypass the cache.

  • Press and hold Shift and left-click the Reload button.
  • Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
  • Press "Cmd + Shift + R" (MAC)

Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

A possible cause is security software (firewall) that 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.

See: