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Before opening Firefox I get a window: JavaScript application Exc in ev hand: TypeError: This.oRoot.enable is not a function. I must click the ok and then Firefox opens

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  • Last reply by cor-el

Arie59
Arie59
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I click on Firefox to open the browser. Browser doesn't open. I get a small window: (Application JavaScript) Exc in ev hand: TypeError: This.oRoot.enable is not a function OK I must click the OK and then the browser opens. How can I get away with this? I'm using 3.6.11 Edition 6 created many troubles with printing using Lexmark Please help.

I click on Firefox to open the browser. Browser doesn't open. I get a small window: (Application JavaScript) Exc in ev hand: TypeError: This.oRoot.enable is not a function OK I must click the OK and then the browser opens. How can I get away with this? I'm using 3.6.11 Edition 6 created many troubles with printing using Lexmark Please help.

Chosen solution

This issue can be caused by the McAfee Site Advisor extension

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

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cor-el
cor-el
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This issue can be caused by the McAfee Site Advisor extension

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).