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

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

only firefox is taking forever to open for the last few weeks

  • 1 reply
  • 10 have this problem
  • 1 view
  • Last reply by cor-el

more options

for the last few weeks, whenever i try to open firefox, it takes at least a minute to open. the process opens within a few seconds of clicking the icon, but not the window. i've watched the process (in the processes tab in task manager), and the memory usage builds very slowly. right now, firefox is open, and the memory usage is up to 115,000k. all other programs, including ie8, still open quickly, but not firefox. i have done numerous virus scans (avg, malware, spybot, hijackthis, and combofix), and they've all turned up clean. i just updated firefox from 3.6.6(?) to 3.6.9, and it didn't fix the problem.

for the last few weeks, whenever i try to open firefox, it takes at least a minute to open. the process opens within a few seconds of clicking the icon, but not the window. i've watched the process (in the processes tab in task manager), and the memory usage builds very slowly. right now, firefox is open, and the memory usage is up to 115,000k. all other programs, including ie8, still open quickly, but not firefox. i have done numerous virus scans (avg, malware, spybot, hijackthis, and combofix), and they've all turned up clean. i just updated firefox from 3.6.6(?) to 3.6.9, and it didn't fix the problem.

All Replies (1)

more options

Start Firefox in Use Troubleshoot Mode in Firefox to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems


Create a new profile as a test to check if your current profile is causing the problems
See Basic Troubleshooting: Make a new profile

There may be extensions and plugins installed by default in a new profile, so check that in "Tools > Add-ons > Extensions & Plugins"

If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)

See http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox