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Old 17th Jun 2021, 17:56
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Carrier
 
Join Date: Jan 1998
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Firefox shows outdated version

We use Firefox on a MacBook Air with OSX 10.9.5 Mavericks and an iMac with OSX 10.11.6 El Capitan. For years we have used Firefox which is always kept current. The latest version which is on both Macs is 78.11.0esr.

Firefox works fine on the MB Air. It used to work fine on the iMac. However over the past few months on the iMac a number of websites have sent messages saying: "Please update your browser", "Your browser is no longer supported" , "Your web browser is out of date, Please update your browser" etc. One website now refuses to work with my very current browser.

Although Firefox is supposedly the same on both Macs with the latest version and the same settings it seems that Firefox on the iMac is somehow incorrectly identifying itself. There have been several Firefox updates installed since this problem first appeared on the iMac.

I will appreciate advice on where the problem is and how to correct it.
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