Hold down the Shift key when starting Firefox. Click the Open button (before Fx88: 'Start in Safe Mode' button). (before Fx88: Restart with Add-ons Disabled)Īnd OK the restart. (menu bar) Help menu > Troubleshoot Mode.(before Fx88: Restart with Add-ons Disabled) '3-bar' menu button > Help > Troubleshoot Mode.You can restart Firefox in Safe/Troubleshoot Mode using either: Testing in Firefox's Safe/Troubleshoot Mode: In this mode, Firefox temporarily deactivates extensions, hardware acceleration, any userChrome.css/userContent.css files, and some other advanced features to help you assess whether these are causing the problem. In the dialog that opens, you will see one or more matches to the current address so you can remove the site's cookies individually without affecting other sites. After a moment, a 'Clear Cookies and Site Data' button should appear at the bottom. While viewing a page on the site, click the lock icon at the left end of the address bar. (2) Remove the site's cookies (save any pending work first). If you have a large hard drive, this might take a few minutes.

There may or may not be a number on the icon indicating the number of blocked items you sometimes need to click the button to see what's going on and test whether you need to make an exception for this site.Ĭache and Cookies: When you have a problem with one particular site, a good 'first thing to try' is clearing your Firefox cache and deleting your saved cookies for the site. (B) Extensions such as Adblock Plus, Blur, Disconnect, DuckDuckGo Privacy Essentials, Ghostery, NoScript, Privacy Badger, uBlock Origin or uMatrix usually provide a toolbar button to manage blocked content in a page. See: Enhanced Tracking Protection in Firefox for desktop. Click the icon to learn more or make an exception. (A) The shield icon toward the left end of the address bar usually turns a bit purplish when content is blocked.

Otherwise, if a site is generally known to work in Firefox, these are standard suggestions to try when it stops working normally:ĭouble-check content blockers: Firefox's Tracking Protection feature, and extensions that counter ads and tracking, may break websites that embed third party content (meaning, from a secondary server). These screenshots are old now, but this is the general idea (click Allow after entering the site):

One known issue is that the site is sensitive to cookie restrictions, so if you have checked the box to 'Delete cookies and site data when Firefox is closed' you need to add an exception for the specific site that has the issue (whether that is or ) using the 'Manage Exceptions' button.

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