Cache and Cookies

Clear cache and cookies

Crashes

Firefox crashes

Firefox crashes when you open it (Windows)

Firefox crashes when you open it (Mac)

Extensions & Safe Mode

Starting Firefox in Safe Mode

Uninstalling an extension

Get troubleshooting information

Disable hardware acceleration

General

Opening the Firefox configuration

Zoom feature

Creating a screenshot

Turning off automatic Firefox update

Reset Firefox

Malware

Plugins

Plugin check

Recent Flash issues

Search

Reset location bar search provider

Changing the order or pick another search engine