Recently, whenever I try to open Firefox, I get a dialog box: Exc in ev handl: TypeError: brw is not defined (JavaScript Application). Firefox is certainly my default browser

Question
Recently, whenever I try to open Firefox, I get a dialog box: Exc in ev handl: TypeError: brw is not defined (JavaScript Application). Certainly, Firefox is my default browser.
After clicking on OK Firefox opens.

You can probably get rid of it by disabling McAfee Site Advisor ending Firefox and then restarting Firefox and the reactivation of McAfee Site Advisor, ending at Firefox and restart Firefox. But it would probably be best to uninstall Site Advisor and reinstall (as opposed to the update)...

Please see the solution in http://kb.mozillazine.org/Problematic_extensions
"McAfee Site Advisor.

(Windows): for best results, you need to uninstall McAfee Site Advisor from Control Panel > add/edit programs (programs and features). Restart the system. Then http://www.siteadvisor.com/ reinstalling and reboot the system. Installation of other waste (crapware) suggested applications.

Please mark "resolved" a response that will better help others with a similar problem - hope it was her.

Tags: Firefox

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