Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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.

Since updating to the new Firefox it locks up my browser and I have to shut down and restart my computer.

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by Shadow110

RCFPL
RCFPL
more options

I am running Windows 7 Home Premium with 64 bit operating system. Since installing the latest version of Firefox my browser will lock up or is very slow to access and download pages. I have had Best Buy Geek Squad check my computer and perform diagnostics but it has not improved. When I use Google Chrome as my browser it works fine and has not locked up.

I am running Windows 7 Home Premium with 64 bit operating system. Since installing the latest version of Firefox my browser will lock up or is very slow to access and download pages. I have had Best Buy Geek Squad check my computer and perform diagnostics but it has not improved. When I use Google Chrome as my browser it works fine and has not locked up.

All Replies (1)

Shadow110
Shadow110
more options

please : go to the Firefox 3 Bar Menu --> Options --> Privacy & Security panel and under Permissions check (put a tick in the box) the setting to Prevent Accessibility Services from accessing your browser.

Monitor in Task Manager. Should stay below 2 gigs. If excessive then do below and monitor and change if need to...Test and go up again , go back down, it will eventually get a zone you and it can live with.

Go to the 3 Bar Menu then Options --> General --> Performance and untick everything. change the recommended size lower then see how it runs. Note: 1 = No Multiprocessor = slow again. Try 2 Restart Firefox after making these changes please.

Please let us know if this solved your issue or if need further assistance.