Whenever I want to open a new Firefox window or Firefox, the following error message appears: [JavaScript Application] Exc in ev handl: TypeError: this.oRoot.enable is not a function. How can I solve this?

A small window with the error message appears whenever I want to open Firefox or if Firefox wants to open a window. I have to click the OK button and then open Firefox. It's embarrassing.

I have a "Site of McAfee Advisor" in my add or remove programs.

Tags: Firefox

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