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Unsupported Browser

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mdcleary
mdcleary
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On a few sites that I regularly use (i.e. to pay bills), whenever I click on the link Firefox opens a page saying my browser in "Unsupported". I'm using Firefox, and it is the latest version. This does not happen with other browsers such as Chrome.

I have reported this before but never received any kind of response. If this continues I'll just have to switch to another browser.

On a few sites that I regularly use (i.e. to pay bills), whenever I click on the link Firefox opens a page saying my browser in "Unsupported". I'm using Firefox, and it is the latest version. This does not happen with other browsers such as Chrome. I have reported this before but never received any kind of response. If this continues I'll just have to switch to another browser.

Réiteach roghnaithe

Some websites just don't like Firefox.

What is/are the exact error message(s) ?


Websites say that Firefox is outdated or incompatible even though it's the latest version

https://support.mozilla.org/en-US/kb/how-reset-default-user-agent-firefox

You can check out at the browserspy website how websites see you: 

http://browserspy.dk/browser.php

http://browserspy.dk/headers.php
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FredMcD
FredMcD
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Réiteach Roghnaithe

Some websites just don't like Firefox.

What is/are the exact error message(s) ?


Websites say that Firefox is outdated or incompatible even though it's the latest version

https://support.mozilla.org/en-US/kb/how-reset-default-user-agent-firefox

You can check out at the browserspy website how websites see you: 

http://browserspy.dk/browser.php

http://browserspy.dk/headers.php
cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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Can you post a link to a publicly accessible page (i.e. no authentication or signing on required)?

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window

You can remove all data stored in Firefox for a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History").

Using "Forget About This Site" will remove all data stored in Firefox for this domain like history and cookies and passwords and exceptions and cache, so be cautious. If you have a password or other data for that domain that you do not want to lose then make sure to backup this data or make a note.

You can't recover from this 'forget' unless you have a backup of involved files.

If you revisit a 'forgotten' website then data for that website will be saved once again.