Fix specific crashes
-  Firefox crashes when downloaded files are checked by virus scan
-  Firefox won't start - find solutions
-  Adobe Flash plugin has crashed - Prevent it from happening again
Fix hard-to-describe or hard-to-reproduce problems
-  Follow troubleshooting steps to find the cause of a Firefox crash
-  Fix problems that cause Firefox to hang or stop responding
-  Follow these basic troubleshooting steps to find the cause of most other Firefox issues
-  Troubleshoot extensions and themes that could cause Firefox to crash
-  Troubleshoot plugins that could cause Firefox to crash
-  Avoid crashes - Tips and tricks
Check for viruses or spyware
A number of different viruses and spyware are known to crash Firefox. To ensure that your system clean of spyware and viruses, install, update their virus databases, and use both of these programs:
For more information, see: