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How can I remove a Disabled Extension not compatible with Firefox 4.0.1? I just want to remove it... I don't want to wait for a compatible update. Why can't I remove it?

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Pedro Matos Rito
Pedro Matos Rito
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When I upgraded from 3.XX to 4.0.1, it informed me that 2 extensions were not compatible and it never gave me the option to remove them. Firefox 4.0.1 disabled them and now I'm not able to remove them. Also they were added by Acrobat Pro X (Adobe Acrobat - Create PDF 1.0) and Nokia Ovi Suite (Firefox Synchronisation Extension 7.3.4.51). These extensions won't probably be updated unless they update the software that installed them. With this said, How can I remove the disabled extensions? Why it doesn't give me a button to remove them to start with?

When I upgraded from 3.XX to 4.0.1, it informed me that 2 extensions were not compatible and it never gave me the option to remove them. Firefox 4.0.1 disabled them and now I'm not able to remove them. Also they were added by Acrobat Pro X (Adobe Acrobat - Create PDF 1.0) and Nokia Ovi Suite (Firefox Synchronisation Extension 7.3.4.51). These extensions won't probably be updated unless they update the software that installed them. With this said, How can I remove the disabled extensions? Why it doesn't give me a button to remove them to start with?

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pchu
pchu
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I think it's not the problem of compatibility. Extensions installed into Windows registry won't have a remove button ( or it's greyed out ). For these extensions, you can have a look into these keys: HKEY_CURRENT_USER\Software\Mozilla\Firefox\Extensions\ HKEY_LOCAL_MACHINE\Software\Mozilla\Firefox\Extensions\

If you are under a 64bit OS as I am, you may also try this key: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Mozilla\Firefox\Extensions\

And you may find the registry entries corresponding to the extensions you want to remove. Just export them to a backup.reg, then delete these entries. Firefox will do the rest, but it seems that fx still leaves extensions.rdf untouched. You can also delete the RDF entries corresponding to those extensions inside extensions.rdf

cf: http://kb.mozillazine.org/Uninstalling_add-ons#Windows_Registry_extension BUT the Wow6432Node key wasn't mentioned in the above article I had to search the registry to find out the entry corresponding to a Fiddler2 extension, then I found the Wow6432Node key. I also saw the Nokia Ovi Suite entry beside the Fiddler2 entry. Hope it helps.