We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

Firefox version confusion

  • 4 replies
  • 1 has this problem
  • 1 view
  • Last reply by James

box1291
box1291
more options

Firefox is telling the world that it is version 91: confirmed by websites are telling me that my 91 installation is out of date, further confirmed from this page below showing 

   Firefox version (optional): 
   91.0

Under Settings/Firefox Updates I see "Version 97.0.1 Firefox is up to date."

Anyone know what's going on?

I have done my best to suppress browser and OS fingerprinting. Is that the cause? I also note that under 'Troubleshooting information" below the page shows "We can't automatically get your browser's troubleshooting data"

Firefox is telling the world that it is version 91: confirmed by websites are telling me that my 91 installation is out of date, further confirmed from this page below showing Firefox version (optional): 91.0 Under Settings/Firefox Updates I see "Version 97.0.1 Firefox is up to date." Anyone know what's going on? I have done my best to suppress browser and OS fingerprinting. Is that the cause? I also note that under 'Troubleshooting information" below the page shows "We can't automatically get your browser's troubleshooting data"

Chosen solution

Hi

The anti-fingerprinting option makes Firefox appear to sites as being the latest "extended support release" version - which is currently Firefox 91.

Read this answer in context 👍 1

All Replies (4)

Paul
Paul
  • Top 25 Contributor
  • Moderator
more options

Chosen Solution

Hi

The anti-fingerprinting option makes Firefox appear to sites as being the latest "extended support release" version - which is currently Firefox 91.

James
James
  • Moderator
  • Top 10 Contributor
more options

See also https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting

box1291
box1291 Question owner
more options

Ok - checked and tested.

As Seburo and James point out, privacy.resistFingerprinting being on causes the the User Agent to appear as the latest "extended support release" version.

Turning it off showed my version as 97, turning it on again brought it back to 91.

Now I haven't noticed any specific problems with this, but since in the last month or so I've been getting warning messages from sites that I am out of date, I wouldn't be surprised if I do hit problems soon.

Does this seem likely? Is there a timeline for updating the atest "extended support release" version?

James
James
  • Moderator
  • Top 10 Contributor
more options

The next ESR will be based on the Firefox 102 Release.