Let us know who the suspect is, detective. Search Support Search. Home Support Forums Firefox Firefox randomly becomes unresponsive. Learn More. FredMcD Top 10 Contributor. KathTheDragon Question owner.
I turned off hardware acceleration and it seems to have worked! Thankyou so much. Glad to help. Initiate a restart If Firefox is not responding it means that something stopped its processes. And a restart might be the perfect solution for reinitiating everything.
Expert Tip: Some PC issues are hard to tackle, especially when it comes to corrupted repositories or missing Windows files. If you are having troubles fixing an error, your system may be partially broken. We recommend installing Restoro, a tool that will scan your machine and identify what the fault is. Click here to download and start repairing. Finally, run Firefox and verify if everything works as it should now; if not, go to the next troubleshooting solution.
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Hardware acceleration is a feature also related to your graphics card. In some situations, depending on certain graphic card setups, Firefox might get into a freeze loop when hardware acceleration is in use.
New places database might fix the Firefox not responding malfunction — interrupted download processes from Firefox can cause corrupted places within the app database. Note : Your web browsing history and your bookmarks will be deleted in this operation. These are the easiest solutions to repair Firefox. If the web browser is still not responding in Windows 10, give further info — tell us when you first got the problems, what happened when you tried to fix everything, etc.
To determine if you use an automatic proxy configuration file:. The latest Firefox versions includes improvements in memory usage, especially during long sessions. Update Firefox to the latest version.
If you regularly leave Firefox open so that you return to where you left off, you may want to use Firefox's Session Restore feature. For more information, see Configuring session restore. Firefox may hang when downloading files if your download history has grown too large.
To clear the download history:. Firefox may hang if the last download folder location e. To fix this:. See if you are now able to download files or save images. If this works, you can go back to your Firefox settings, if you wish, and select Always ask me where to save my files.
Sometimes when you close Firefox, it may stop responding and remain in memory, even though no Firefox windows are open. This can prevent Firefox from working properly the next time you open it or you may see a "Close Firefox" dialog box with an error message, Firefox is already running, but is not responding.
A copy of Firefox is already open. You must then end all Firefox processes or restart the computer before you can reopen Firefox see "Firefox is already running but is not responding" error - How to fix for other causes and solutions.
If Firefox processes that remain in memory at exit are a recurring problem, try the following solutions. A problematic extension can cause the problem, which can be resolved by disabling or uninstalling the extension. For information on diagnosing and fixing problems caused by faulty extensions, see the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article. Interactions between certain Internet security software firewall, anti-virus software is reported to cause hangs on some systems.
You can try to configure your firewall to see if it helps the hang go away. When resuming Windows from hibernation and Firefox hangs for several minutes it might be due to an issue of the pre-installed "ThinkVantage Technologies Power Manager 6". One option to solve this is to uninstall the software.
Another option is to check for a later version of the software on the Lenovo support website and see if that fixes the problem.
See Bug for more details.
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