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This version of Firefox is no longer supported.

asked 2017-12-13 16:05:38 -0600

neverknew gravatar image

I just upgraded to F27 (today). Firefox reports as version 57.0.1 (64 bit) for Fedora.

When I open Gmail in Firefox I get a message: "This version of Firefox is no longer supported. Please upgrade to a supported browser." I've been getting this message since just before upgrading to Firefox 57.0 (a couple of months ago?)

Is this just something Gmail isn't reading correctly? or should I be concerned (instead of merely annoyed)?

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I have no problem acessing gmail on my Fedora 26 with the most recent Firefox (57.0.1). Are you talking about some sort of gmail plugin/addon for Firefox?

florian gravatar imageflorian ( 2017-12-13 21:26:48 -0600 )edit

Check your date and time in the system...

davidva gravatar imagedavidva ( 2017-12-13 22:30:54 -0600 )edit

usually SSL doesn't work if date/time is incorrect but those errors should look different, no?

florian gravatar imageflorian ( 2017-12-13 23:45:44 -0600 )edit

Do you have some extension that changes the user agent string? Try going to and see what it says.

ssieb gravatar imagessieb ( 2017-12-14 14:09:47 -0600 )edit

When I run the box says I'm running Firefox 31 - not 57... it gives a build date of 20100101, Ancient history. The machine isn't that old. Any ideas on how to change it?

neverknew gravatar imageneverknew ( 2017-12-14 16:03:24 -0600 )edit

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answered 2017-12-14 16:15:08 -0600

neverknew gravatar image

It looks like the problem comes from the User-Agent Switcher I use to emulate Android on my computer. It uses the string: Firefox Running on Linux - Mozilla/5.0 (X11; Linux i586; rv:31.0) Gecko/20100101 Firefox/31.0

I'll try removing it.


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There is User Agent Switchers out there that let you emulate more modern versions of Android (and other OS)

florian gravatar imageflorian ( 2017-12-14 19:37:14 -0600 )edit

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Asked: 2017-12-13 16:05:38 -0600

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Last updated: Dec 14 '17