You can also do a manual refresh by creating a new profile and transferring your important data to the new profile. Note: There's a Refresh Firefox button in the Firefox Troubleshoot Mode window, if you can't start Firefox normally. To start Firefox in Troubleshoot Mode:Ĭlick the menu button, click Help, select Troubleshoot Mode… and click Restart in the Restart Firefox in Troubleshoot Mode? dialog. Under Try clearing the startup cache, click Clear startup cache… and then click Restart.įirefox Troubleshoot Mode is a diagnostic mode that disables extensions, uses the default theme, turns off hardware acceleration and uses default toolbar settings, among other changes (see this article for details).The Troubleshooting Information page will open. Click the menu button, click Help and select More Troubleshooting Information.This will not change your profile data or add-ons. Clearing the startup cache and then restarting Firefox can resolve various issues with the Firefox user interface (UI). Make sure other items you want to keep are not selected.įirefox also has a startup cache that stores certain temporary data, to improve startup speed.

Below the drop-down menu, select both Cookies and Cache.

In the Time Range to clear: drop-down, select Everything.

Click History and select Clear Recent History….

Click the menu button to open the menu panel.

To learn more, see Clear cookies and site data in Firefox and How to clear the Firefox cache. Many problems with loading web pages can be resolved by clearing Firefox's cookies and cached Web content. Sometimes problems can be fixed by simply restarting your computer and then starting Firefox again.

7.3 Check for conflicts with your Internet security software.

7.2 Check for issues caused by corrupt or incomplete Visual C++ installation.

Firefox 45.0 bugs