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Have installed latest version of Firefox but web pages keep stating I am running old version no longer supported

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I keep downloading and installing latest version (8) of Firefox. The browser states I have Firefox 8. However, on Google Mail and some other websites I get a message stating I am running an out of date unsupported version of Firefox.

I keep downloading and installing latest version (8) of Firefox. The browser states I have Firefox 8. However, on Google Mail and some other websites I get a message stating I am running an out of date unsupported version of Firefox.

Vald lösning

The article says to reset the following, which you included as having:

  • general.useragent.extra.microsoftdotnet (first bulleted item under 1.)
  • general.useragent.override (Comment: this is most likely the one causing you the problem)

NOTE: restart Firefox after resetting those items.

Those are both shown as "1. If they exist, you may also need to reset:" following item 3. (that 1. should be a 4.; that is an error in the formatting of the article.)


If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.

Läs svaret i sitt sammanhang 👍 1

Alla svar (4)

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You may need to reset your user agent as outlined in the article below.


If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.



Not related to your question, but...

You may need to update some plug-ins. Check your plug-ins and update as necessary:

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I do not have those options appearig. I have: general.useragent.compatMode.firefox;false general.useragent.extra.microsoftdotnet;( .NET CLR 3.5.30729) general.useragent.locale;en-GB general.useragent.override;Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.0.16; .NET CLR 3.0; ffco7) Gecko/2009120208 Firefox/3.0.16

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Vald lösning

The article says to reset the following, which you included as having:

  • general.useragent.extra.microsoftdotnet (first bulleted item under 1.)
  • general.useragent.override (Comment: this is most likely the one causing you the problem)

NOTE: restart Firefox after resetting those items.

Those are both shown as "1. If they exist, you may also need to reset:" following item 3. (that 1. should be a 4.; that is an error in the formatting of the article.)


If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.

Ändrad av SafeBrowser

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Reset all the general.useragent. prefs that are bold and say user set.

type about:config in the URL bar and hit Enter
If you see the warning, you can confirm that you want to access that page.
Filter = general.useragent.
Right-click the preferences that are bold, one line at a time, and select Reset.
Then restart Firefox