We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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.

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

i have refreshed firefox twice and still get (not responding) message. locked up 90% of the time. HELP PLZ.

  • 10 replies
  • 1 has this problem
  • 25 views
  • Last reply by FredMcD

more options

locks up constantly, every click and i wait 2 minutes at least, every click, wait 2 minutes for it to unlock.

locks up constantly, every click and i wait 2 minutes at least, every click, wait 2 minutes for it to unlock.

All Replies (10)

more options

Start Firefox in Safe Mode {web Link} by holding down the <Shift>
(Mac Options)
key, and then starting Firefox. Is the problem still there?


Start your Computer in safe mode with networking. Then start Firefox. Try Safe web sites. Is the problem still there?

Starting The Computer In Safe Mode;
Free Online Encyclopedia

more options

none of this helped, still locking up contantly. really getting annoyed with firefox. geez.

more options

You did try with the computer in safe mode, yes?

Use these instructions to create a new profile. Then use it. Do not make any changes just yet. Is the problem still there?

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles Windows: 32-bit C:\Program Files\Mozilla Firefox\firefox.exe -p 64-bit C:\Program Files (x86)\Mozilla Firefox\firefox.exe -p Mac: Navigate to /Applications/Utilities. Open the Terminal application. In the Terminal application, enter the following: /Applications/Firefox.app/Contents/MacOS/firefox-bin -p Linux: In Terminal run: firefox –P For users who have one or more builds from mozilla.org this will not work. It would be best to have the full path so if you had placed the untared contents in a folder in /home it would be /home/<username>/foldername/firefox/firefox –P An easy way would be not to do it in a terminal but in say a launcher since you have to point it to the firefox script in Firefox folder you can then add –P on end. You can also have the exact "profilename" after the -P so Firefox will start with that Profile.

more options

this worked for about 1 hour, then it reverted back to "not responding". i also have been getting other warning messages, warning, unresponsive script and warning, unresponsive plug-in.

more options

Next time you get those alerts, please try to write down what they say.

more options

i did step 1, no problem. i went to remove firefox and it would not let me remove it. i would click on remove and it just flashed and stayed. one of the alerts says.... warning: unresponsive plugin...shockwave flash may be busy, or it may have stopped responding. you can stop the plugin now, or you can continue to see if the plugin will complete. ... i just got this message 5 times in the past 10 minutes.

more options

You did shut down Firefox before you tried to remove it, Yes? What did the error message say when you tried?

While you are at it, also remove Flash as well. We will put it back later.

more options

no error message, just wouldn't let me remove it. (firefox). i removed adobe flash. other alert msg says... warning: unresponsive script.. a script on this page may be busy, or it may have stopped responding. you can stop the script now, open the script in the debugger, or let the script continue.... thank you for your help.

more options

i have saved all of my pics and important docs to a flash drive. is there any way to restore this machine to it's factory setting and clean everything out? it is locking up constantly.

more options

I don't know your system, so I have to guess.

Start your Computer in safe mode.

Starting The Computer In Safe Mode;
Free Online Encyclopedia

When the Safe Mode menu comes up, see if there are options to fix, restore, or whatever.