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Learn what steps to take if you can't hear sound in Firefox.

This article describes what to do when you can't hear sound in Firefox. *To allow autoplay of media with sound, see [[Allow or block media autoplay in Firefox]]. {for win} __TOC__ = Check the Volume Mixer = # Open Firefox and play content that should play sound, such as this [http://youtu.be/LtOGa5M8AuU Firefox video]. # {for win7,win8}Click{/for}{for win10,win11}Right-click{/for} the volume icon in the Windows taskbar. # Click {for win7,win8}'''Mixer'''{/for}{for win10,win11}'''Open Volume Mixer'''{/for}. The Volume Mixer window will appear. # Make sure the slider for ''Mozilla Firefox'' is not muted or at the bottom.<!-- Volume Mixer while playing Flash audio content on Windows 7 in Firefox 82. Test page: http://comp.cast.org/audiotest/ --> ;{for win7}[[Image:VolumeMixer-Win7]]{/for}{for win8,win10,win11}[[Image:Win10 Volume Mixer]]{/for} = Check your audio device = Make sure that the audio device (such as speakers or headphones) are turned on and connected to the computer properly. = Other solutions = Check out whether other applications on your computer can play sounds. If they can't: * Follow Microsoft's [https://support.microsoft.com/en-ca/help/4026994/windows-fix-sound-problems Fix sound problems] tutorial. If Firefox is the only application that you can't hear sound in: * Try the solutions in [[Video or audio does not play]]. {/for} {for mac} Make sure other applications on your computer can play sounds. If Firefox is the only application that you can't hear sounds in: * Try the solutions in [[Video or audio does not play]]. If no application can play sounds: * See Apple's [http://support.apple.com/kb/ts1574 Troubleshooting issues with no audio from built-in speakers on Macs]. * If you have an external audio device, check whether it's turned on and connected properly. {/for} {for linux} Make sure other applications on your computer can play sounds. If Firefox is the only application that doesn't play sounds: * Try the solutions in [[Video or audio does not play]]. If you can't hear sounds in any other applications: * Make sure that the audio device (such as speakers or headphones) are turned on and connected to the computer properly.🦊 {/for}