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Every time I start FF I get the update window and it says there is a XULRunner 1.9.1 add-on. The disable button works but next turn on a new one is installed. The uninstall button does not work. Is it a virus? Thanks.

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  • Last reply by cor-el

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It started a few days ago. Keeps wanting to install the same add-on each time and I can't say no or delete it. Just disable it after installation which it seems to accept. But next time I start FF there it is again. There is a whole list of the same disabled add-ons in the box each time the newest one appears to be installed. I searched the FF site for this add-on and I didn't see it there so I'm assuming it's a virus or something else bad. Thanks for any help.

It started a few days ago. Keeps wanting to install the same add-on each time and I can't say no or delete it. Just disable it after installation which it seems to accept. But next time I start FF there it is again. There is a whole list of the same disabled add-ons in the box each time the newest one appears to be installed. I searched the FF site for this add-on and I didn't see it there so I'm assuming it's a virus or something else bad. Thanks for any help.

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The XULRunner 1.9.1 extension is considered malware and you should remove it.