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

custom useragent string no longer in effect for FF4

  • 3 replies
  • 16 have this problem
  • 1 view
  • Last reply by TonyE

more options

in about:config I had a custom useragent string set, but when I upgraded to FF4, it is no longer being used, site's see the standard FF4 user agent string

if I visit a page in FF4 and dump the contents of the $_SERVER global var in PHP, it shows the standard FF4 user agent.

in about:config I had a custom useragent string set, but when I upgraded to FF4, it is no longer being used, site's see the standard FF4 user agent string if I visit a page in FF4 and dump the contents of the $_SERVER global var in PHP, it shows the standard FF4 user agent.

Chosen solution

It is no longer possible to add things to the user agent string in Firefox 4. The only option available is to replace it using general.useragent.override

Read this answer in context 👍 3

All Replies (3)

more options

Chosen Solution

It is no longer possible to add things to the user agent string in Firefox 4. The only option available is to replace it using general.useragent.override

more options

Thank you very much, that did the trick. I just added a new config item (string) called:

general.useragent.override

and set it to the modified user agent string, and it worked perfectly. Thanks for your time.

Modified by jaredh159

more options

You're welcome

You need to remember to update that preference when you update Firefox to ensure that it always shows the correct version of Firefox.