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

Natao arisiva ity resaka mitohy ity. Mametraha fanontaniana azafady raha mila fanampiana.

Firefox Quantum (57.0.1) not loading in Mac (10.12.16). Its completely unresponsive

more options

When I try to open preferences (which takes >5min to open and sometimes fail to open as well) or a new Tab, I get a "Warning : Unresponsive Script running" error.

When I try to open preferences (which takes >5min to open and sometimes fail to open as well) or a new Tab, I get a "Warning : Unresponsive Script running" error.

Vahaolana nofidina

When you startup Firefox first thing it does is call for your Profile, Then it loads Firefox as to how you have managed settings and extensions and, and, and.

Nothing to do with signing into anything, It is the way it works.

uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86) Then restart system. Note: your Firefox Profile is saved. But you should make a back up before you do : https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Reinstall with Current Release Firefox 57.0.1 with a Full Version Installer https://www.mozilla.org/firefox/all/

If still a issue make a new Profile.

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

Hamaky an'ity valiny ity @ sehatra 👍 0

All Replies (4)

more options

Go to the Firefox 3 Bar Menu --> Help ? --> Troubleshooting Information Page and take a look in the Accessibility section if accessibility is set to "true" there. if yes, go to the Firefox 3 Bar Menu --> Options --> Privacy & Security panel and under Permissions check the setting to Prevent Accessibility Services from accessing your browser. Restart Firefox

Please : https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer and https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles then https://support.mozilla.org/en-US/kb/refresh-firefox-reset-add-ons-and-settings TEST....... If no issues then Extensions which need to be added back in 1 at a time and tested ..... Or it is your Profile : Make a new one and test ...: https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

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

more options

No, Accessibility was set to false. I also checked the Prevent Accessibility Services from accessing your browser, but still the same problem. I have not signed into Firefox so this cannot be a profile issue.

more options

Vahaolana Nofidina

When you startup Firefox first thing it does is call for your Profile, Then it loads Firefox as to how you have managed settings and extensions and, and, and.

Nothing to do with signing into anything, It is the way it works.

uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86) Then restart system. Note: your Firefox Profile is saved. But you should make a back up before you do : https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Reinstall with Current Release Firefox 57.0.1 with a Full Version Installer https://www.mozilla.org/firefox/all/

If still a issue make a new Profile.

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

more options

Hi Pkshadow, Thanks for your info. I just installed the older version (56.x) of the firefox, updated that and now the firefox magically works. I don't understand what changes that I made caused Firefox to work.