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Getting error message when starting Firefox. Msg as follows: TypeError: Components.classes[cid] is undefined (using on Windows 7) Help?

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  • Last reply by cor-el

kmac0505
kmac0505
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Getting the following error message when I start Firefox. TypeError: Components.classes[cid] is undefined Do not know where to go to fix this. Running my laptop on Windows 7.

Getting the following error message when I start Firefox. ''TypeError: Components.classes[cid] is undefined'' Do not know where to go to fix this. Running my laptop on Windows 7.

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cor-el
cor-el
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This issue can be caused by an extension that isn't working properly.

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).