hello jonbev2303, do you happen do use any addons or external software that might interfere with the cookie handling in firefox?

Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems

As far as I'm aware, I haven't added any recently. I've attached a list of the current plugins I've got installed, I'm not sure if any of them could be the problem?

could you also attach the contents of the "extensions" section - they are likelier to play a part in this problem. thank you...

Thanks for your quick replies so far - I've attached a screenshot.

does it make a difference when you reset firefox?

Just tried that and I'm still having the same problem.

What are the connection settings?

• Tools > Options > Advanced > Network : Connection > Settings
• https://support.mozilla.org/kb/Options+window+-+Advanced+panel

If you do not need to use a proxy to connect to internet then try to select "No Proxy" if "Use the system proxy settings" or one of the others do not work properly.

See "Firefox connection settings":

• https://support.mozilla.org/kb/Firefox+cannot+load+websites+but+other+programs+can

Check the date and time and time zone in the clock on your computer: (double) click the clock icon on the Windows Taskbar.

• https://support.mozilla.org/kb/Secure+Connection+Failed

Boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps.

• http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/

A user who set Firefox to "never remember history" and as a result started up automatically in private browsing mode reported this problem. I'm not sure we figured how why they were affected -- i.e., has private browsing changed?

• Since upgrading to V31.0 why are my log-in sessions to various websites, such as yahoo mail, terminating - sometimes after only a few minutes?

Not sure whether that is a factor in your case, since you did a Reset.

jscher2000, I think you've found the problem there. I have Firefox set to never remember history (and have done for some time now). I've just tried it with Firefox now remembering history and it seems to work with no problems. I'm not sure why this is the case, as I said it's never been a problem before.

For the time being I can get by with Firefox remembering history, but hopefully this issue will be solved in the next update. As the specific cause still seems unknown, I'll say that this has been solved. Thanks for all the suggestions!

For other sites that don't have this problem, you can browse them in a private window using any of these methods:

• right-click a link > Open Link in New Private Window
• Ctrl+Shift+p to launch the private window, then click a bookmark or use the address/search bars

You will see a white-mask-on-purple-background near the minimize/maximize/close buttons for those windows.

You can use an extension to get Private Browsing mode support per tab.

• Private Tab: https://addons.mozilla.org/firefox/addon/private-tab/
• Private Browsing mode tabs get a dashed underline
• You can toggle Private Browsing mode on/off via the right-click context menu of a tab