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Learn how to fix crashes and other hard-to-describe or hard-to-reproduce problems. You can also check your computer for viruses, spyware or malware.

=Fix specific crashes= * [[Image:docicon]]&nbsp[[Firefox crashes when trying to download a file]] * [[Image:docicon]]&nbsp[[Firefox will not start]] * [[Image:docicon]]&nbsp[[The Adobe Flash plugin has crashed]] =Fix hard-to-describe or hard-to-reproduce problems= * [[Image:docicon]]&nbsp[[Firefox crashes|Follow troubleshooting steps to find the cause of a Firefox crash]] * [[Image:docicon]]&nbsp[[Firefox hangs|Fix problems that cause Firefox to hang or stop responding]] * [[Image:docicon]]&nbsp[[Basic Troubleshooting|Follow these basic troubleshooting steps to find the cause of most other Firefox issues]] * [[Image:docicon]]&nbsp[[Troubleshooting extensions and themes|Troubleshoot extensions and themes that could cause Firefox to crash]] * [[Image:docicon]]&nbsp[[Troubleshooting plugins|Troubleshoot plugins that could cause Firefox to crash]] * [[Image:docicon]]&nbsp[[How do I avoid crashes?]] {for win} = 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: *[[Image:linkicon]]&nbsp[http://www.malwarebytes.org/products/malwarebytes_free Malwarebytes' Anti-Malware] *[[Image:linkicon]]&nbsp[http://www.superantispyware.com/portablescanner.html SuperAntispyware Portable Scanner] For more information, see: * [[Image:docicon]]&nbsp[[Is my Firefox problem a result of malware]]. {/for}