Firefox 36.0.1 often unable to connect to Internet.
Only trigger I can seem to find is something mentioned in another help ticket that sounds like a slightly different problem. When Firefox is open for a while without loading any web pages, it suddenly stops being able to do so. When I attempt to load a new page it displays the loading circle and a white page, but no more. The browser is not frozen; scrolling through pre-opened tabs and browsing pre-opened pages works fine.
Restarting my computer is so far the only way to "fix" this, but it only works until the next time it occurs.
I have tried clearing my cache, restarting Firefox, and refreshing Firefox to no avail. If I close Firefox after the issue occurs, I cannot re-open it without restarting my computer. It tells me that Firefox is already running but not responding. When I go into Task Manager, Firefox is not there. It's not running.
This issue is exclusive to Firefox. I have Chrome as a backup browser which works just fine when Firefox is not.
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Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options) key, and then starting Firefox. Is the problem still there?
This is not a cure but will make it easier if Firefox locks up in Windows. https://support.mozilla.org/questions/997866 {web link}
Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All of them.
FredMcD said
Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options) key, and then starting Firefox. Is the problem still there?
This is not a cure but will make it easier if Firefox locks up in Windows. https://support.mozilla.org/questions/997866 {web link}
Some added toolbar and anti-virus add-ons are known to cause Firefox issues. Disable All of them.
Just tried that. Same thing happened in safe mode. I'd list the addons I'm using, but I doubt it would be relevant since it also happened in safe mode.
Something that may be relevant: after closing Firefox and attempting to reopen it without restarting my computer, it fails to do so and comes up with "Your Firefox profile cannot be loaded. It may be missing or inaccessible". I've tried "deleting" it by renaming it and letting it create a new one. That also failed.
I recall a similar situation on an earlier version on a different computer, but that was too long ago to get detailed info on.
https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible
Start your Computer in safe mode with networking. Then start Firefox. Try Safe web sites.