At addons.mozilla.org Firefox 3.6.4 is detected as wrong version (Not available for Firefox 2.0.0.13), can't install add-ons
I am trying to add the following add-on: https://addons.mozilla.org/en-US/firefox/addon/1865/
I have the latest Firefox (3.6.4) but addons.mozilla.org keeps saying I am running an old version of Firefox (You are currently using Firefox 2.0.0.13;MEGAUPLOAD).
Because it had Megaupload in that line I checked my old add-ons and I had an old (DISABLED) Megaupload toolbar. I have uninstalled this but the symptoms have not changed.
I have also noticed that on Youtube it is always saying that my browser is no longer supported, but until today I thought it was just a youtube glitch.
This happened
Every time Firefox opened
== I think it was after last major Firefox upgrade (that's when I noticed the Youtube error)
Chosen solution
Your user agent shows Firefox/2.0.0.13;MEGAUPLOAD 1.0
You have or had an extension installed (MegaUpload toolbar) that has changed the user agent from Firefox/3.6.4 to Firefox/2.0.0.13
You can see the Firefox version at the top and the user agent at bottom of the "Help > About" window (Mac: Firefox > About Mozilla Firefox). You check (compare) what websites see: http://whatsmyuseragent.com/ - Whats My User Agent?
You can check the general.useragent prefs on the about:config page. You can open the about:config page via the location bar, just like you open a website. Filter: general.useragent If general.useragent prefs are bold (user set) then you can right-click that pref and choose Reset.
See Web sites or add-ons incorrectly report incompatible browser and Find what version of Firefox you are using See also http://kb.mozillazine.org/Resetting_your_useragent_string_to_its_compiled-in_default
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Chosen Solution
Your user agent shows Firefox/2.0.0.13;MEGAUPLOAD 1.0
You have or had an extension installed (MegaUpload toolbar) that has changed the user agent from Firefox/3.6.4 to Firefox/2.0.0.13
You can see the Firefox version at the top and the user agent at bottom of the "Help > About" window (Mac: Firefox > About Mozilla Firefox). You check (compare) what websites see: http://whatsmyuseragent.com/ - Whats My User Agent?
You can check the general.useragent prefs on the about:config page. You can open the about:config page via the location bar, just like you open a website. Filter: general.useragent If general.useragent prefs are bold (user set) then you can right-click that pref and choose Reset.
See Web sites or add-ons incorrectly report incompatible browser and Find what version of Firefox you are using See also http://kb.mozillazine.org/Resetting_your_useragent_string_to_its_compiled-in_default
Thank you cor-el, that solved the problem!
Very good clear instructions, much appreciated.
You're welcome