Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, see this article.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Firefox stopping to open website, when exited, shut down and terminated all memories of session + Abnormally huge memory consumption

  • 2 replies
  • 2 have this problem
  • 27 views
  • Last reply by cor-el

The Last Melody
The Last Melody
more options

As it said in the title. It would suddenly not load any website from a certain domain, however Internet Explorer could and http://downforeveryoneorjustme.com said it was up. Then I tried to close it, and upon reopening, it had terminated my previous session and forced me to revert to the session used EARLY yesterday morning..... Why do this happen whenever you are seriously looking up something...

Also Firefox seems to use EXTREME amounts of RAM compared to other browsers....

As it said in the title. It would suddenly not load any website from a certain domain, however Internet Explorer could and http://downforeveryoneorjustme.com said it was up. Then I tried to close it, and upon reopening, it had terminated my previous session and forced me to revert to the session used EARLY yesterday morning..... Why do this happen whenever you are seriously looking up something... Also Firefox seems to use EXTREME amounts of RAM compared to other browsers....

All Replies (2)

The Last Melody
The Last Melody Question owner
more options

Forgot screenshot of extreme memory usage... 2500 MB RAM

It normally lies stable at around 1400 MB (still alot...) but sometimes, it spikes like that.....

Modified by The Last Melody

cor-el
cor-el
  • Moderator
more options

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

  • Do NOT click the Reset button on the Safe Mode start window.

You can check for problems with the sessionstore.js and sessionstore.bak files in the Firefox profile folder that store session data.

Rename (or delete) the sessionstore.js file and possible sessionstore-##.js files with a number and sessionstore.bak in the Firefox profile folder.

Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost and you will have to recreate them (make a note or bookmark them if possible).