why does firefox freeze when i open it

posted by Firefox 57 is constantly freezing up since the last update (57. 0. 4)
After the update today (57. 0. 4) Firefox keeps freezing on some sites (can't get something repeatable). CPU usage goes to 80-90% on one of the Firefox processes and the only thing that I can do is to kill it. I get a "tab crashed" message and after reloading the page loads ok. I get this every 2-3 minutes on different sites. Disabled all my add-ons and still the same, maybe a bit more rare now. I have this problem, too hi, thanks for reporting this. can you try if this change can workaround the performance problem? : go to the firefox menu в options privacy security panel and under permissions check the setting to prevent accessibility services from accessing your browser. to check if one of the extensions ("3-bar" menu button or Tools - Add-ons - Extensions) or if hardware acceleration is causing the problem. 0. 3 was running perfectly. 0. 4 update is EXTREMELY sluggish up to hardly working. Typing this took me 8!!!!! times longer due to keyboard lag. How do I revert to. 0. 3? Addendum: Movies run extremely laggy. Other tings as well are very delayed, and laggy. Oddly, menu does act fairly normal speed wise, which makes no sense. Furhter on, my entire system seems to be affected by this, speed and smoothness are no longer what it was. I restored my Windows 10 Pro x64 from an Acronis Backup. I added a few things, I fired up, stupid of me, Firefox which of course updated, and. it worked. Now, what went wrong before: the installation I Had before I set back my backup had several things added (non related programs which I re-installed as well). In my case I am absolutely sure it is Ant Downloader, due to the fact that my current installation now virtually identical to the previous installation regarding programs, save for this Ant Downloader. Of one, Ant Video Downloader. Now, V3. 1. 24 was made for FF57. 0. 3 and I had it running on 57. 0. 3. However, the update (NOTE: IN MY CASE!!! ) caused a conflict with 57. 0. 4, creating hell on my system (which is why I reverted to my backup, the issues drove me insane).


My suggestion: removing Ant Downloader will not fix the issue (tried this). Installing 57. 0. 3 will not work either (left over stuff in various places like Registry??? ), tried it. Registry Clean (with CCLeaner and RegEdit, both run as Admin) did not fix anything either, in fact it got worse. All I could do was in fact go back to my old trusted Acronis Backup of my Windows installation (which I made like 4 weeks ago). Before however you do a thing like this, make SURE all stuff you cannot have lost/deleted, to store it safely Also make a copy of your FF PROFILE FOLDER, but first make 1000% sure you removed Ant Downloader (not just deactivate, but REMOVE)! How to: OPTION 1: in FF, go to the three stripes icon top right, and choose Troubleshooting Information, in there click Open Folder at Profile folder, copy this to for example a, USB- stick. OPTION 2: in the address bar, type "about:support" without the quote marks, then hit enter. Choose Troubleshooting Information, in there click Open Folder at Profile folder, copy this to for example an USB- stick. OPTION 3: Open Windows Explorer and head to C:UsersAdminAppDataRoamingMozillaFirefoxProfiles, copy that folder to for example an USB-stick. Upon having a new Windows installation (or restoration from a backup like I did) you install FF 57. 0. 3, load it, go back to the new PROFILES FOLDER and copy the content from your backup folder into the new PROFILES FOLDER (you need to actually copy it's content from within the copy into the original new folder: dragging the folder over will not help unless you have an identical named PROFILES FOLDER which would be quite surprising). This PROFILES FOLDER will be named something like blahblahblah. default. Maybe someone knows a shorter way to copy the PROFILES FOLDER content to the new installation, but this is how I work. Good luck, people. And happy New Year!!! EDITED FOR 2 TYPOS. posted by I first want to say hello to everyone since this is my first time posting on here. In addition, I hope that by bringing the issue I'm experiencing to light, it gets resolved and everyone experiencing this issue can go back to enjoying Firefox Quantum.


Anyways, the issue I'm experiencing is basically what the title says. I go to open task manager in Windows 10 while having Firefox Quantum opened and my entire computer freezes up and locks up. The only way I can get out of this frozen state my computer goes in is to either, force restart my computer, or wait it out. I attached a video that better demonstrates this issue. I also want to mention that in the video I attached you see me open multiple tabs to demonstrate the issue, however, the issue happens even with a single tab opened, and even if the tab is fully loaded. If anyone has a solution please let me know, or if this is an issue within Firefox itself I hope that developers take a look and hopefully fix it in the the next update. Lastly I want to add that this issue only happens within Firefox every other application works fine. I also notice that when this happens Firefox cracks up my CPU to near 100% and uses and incredible amount of RAM. Video depicting issue - I have this problem, too PleaseP: 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. NoteP: Hardware Acceleration is for Video Card, Monitor to see if remain off or to turn back on. Please let us know if this solved your issue or if need further assistance. Pkshadow PleaseP: 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. NoteP: Hardware Acceleration is for Video Card, Monitor to see if remain off or to turn back on. Please let us know if this solved your issue or if need further assistance. uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:Program Files and C:Program Files(x86) Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you doP: Reinstall with Current Release Firefox 57. 0. 4 with a Full Version Installer Please let us know if this solved your issue or if need further assistance. Pkshadow uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:Program Files and C:Program Files(x86) Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you doP: Reinstall with Current Release Firefox 57. 0. 4 with a Full Version Installer Please let us know if this solved your issue or if need further assistance. I tried all these and nothing fixed my issue. I decided to re-install windows and as I was setting up my computer back up I noticed that I didn't have the issue anymore. However, then I installed my antivirus Webroot and lo and behold the issue came back. I guess there's some issue with Webroot and Firefox. I decided to uninstall Webroot from my computer and everything is working fine now.

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