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IGet this message when I start firefox, TypeError: Components.classes[cid] is undefined

  • 2 replies
  • 64 have this problem
  • 2 views
  • Last reply by winnipooh34

davekmcnic
davekmcnic
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upgraded firefox a couple of days ago now i get this error message, and the upgrade file starts to download again.

message ; TypeError: Components.classes[cid] is undefined

upgraded firefox a couple of days ago now i get this error message, and the upgrade file starts to download again. message ; TypeError: Components.classes[cid] is undefined

All Replies (2)

Xircal
Xircal
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This type of error is usually caused by an add-on you've installed. It could be anything from an antivirus link scanner like AVG Safe Search, or McAfee Site Advisor, or something similar.

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode. If it functions properly in that configuration, then one of your add-ons is the culprit.

See also Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems

winnipooh34
winnipooh34
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I had the same problem . I disables ask.com in my tools and it took it away i do not receive the message any more.