This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Why are multiple instances of firefox appearing in windows sound mixer? (Messes up volumes)

more options

When I open a new tab with sound playback a new instance of firefox appears in sound mixer (Windows 10). I thought this issue was fixed recently? Am I doing something wrong? Sorry this issue is driving me nuts. The new tabs will reset the volume to match my device volume (100%) even though I previously set firefox to about 50%. Thanks in advance

When I open a new tab with sound playback a new instance of firefox appears in sound mixer (Windows 10). I thought this issue was fixed recently? Am I doing something wrong? Sorry this issue is driving me nuts. The new tabs will reset the volume to match my device volume (100%) even though I previously set firefox to about 50%. Thanks in advance

Chosen solution

Well, it was fixed in Firefox 60, but the 1709/1803 update(s) to Windows 10 apparently created a new preferences panel that works differently from the classic Volume Mixer, so it's not fixed in that new panel. I don't see a timetable for a fix (bug 1458034).

Ler a resposta no contexto 👍 1

All Replies (4)

more options

That has been a bug for quite while ......

For now you could try this :

Type in the address bar about:config and press Enter (promise to be careful, if asked)

Type in the search bar and look for the preference :

browser.tabs.remote.autostart

and set its value to false

Then close and restart Firefox.

Also see : https://bugzilla.mozilla.org/show_bug.cgi?id=1458034

more options

Okay thanks, thought I saw somewhere it said it was fixed. My bad, guess I'll just wait.. as for the remote.autostart, it hasnt worked for me but I'll try again after I restart. Cheers, Steven

more options

Chosen Solution

Well, it was fixed in Firefox 60, but the 1709/1803 update(s) to Windows 10 apparently created a new preferences panel that works differently from the classic Volume Mixer, so it's not fixed in that new panel. I don't see a timetable for a fix (bug 1458034).

more options

Just noticed as of 26/9/18 (could've been earlier) Windows seems to have fixed the issue on their end. Hopefully it doesn't keep reoccurring.

stevenfirefx modificouno o