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Facebook and Firefox does not recognise Firefox as my browser.Unable to install any add-ons from Firefox.

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  • 50 have this problem
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  • Last reply by reiner707

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This all happened suddenly by itself. I did not install any new programs or software of any kind. I have Norton security software, but this has been installed on my PC for 6 months without any problems. I have uninstalled Firefox3.6,10. And reinstalled it, but it does not solve the problems.

This all happened suddenly by itself. I did not install any new programs or software of any kind. I have Norton security software, but this has been installed on my PC for 6 months without any problems. I have uninstalled Firefox3.6,10. And reinstalled it, but it does not solve the problems.

Chosen solution

The user agent string may have been modified, try resetting it as shown here - How to reset the default user agent on Firefox

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Chosen Solution

The user agent string may have been modified, try resetting it as shown here - How to reset the default user agent on Firefox