Join us and the lead editor of IRL, Mozilla's multi-award-winning podcast, for a behind-the-scenes look at the pod and to contribute your ideas for the next season, themed: "AI and ME." Mark your calendar and join our Community Call on Wednesday, Aug 7, 17:00–17:45 UTC. See you there!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Echekwara usoro a. Biko jụọ ajụjụ ọhụrụ ma ọ bụrụ na ị chọrọ enyemaka.

Firefox generates error "Exc in ev handl: Error: Bad NPObject as private data!" when opening new tab or moving to existing active tab.

eirdr
eirdr
more options

Firefox generates error "Exc in ev handl: Error: Bad NPObject as private data!" when opening new tab or moving to existing active tab.

Firefox generates error "Exc in ev handl: Error: Bad NPObject as private data!" when opening new tab or moving to existing active tab.

All Replies (1)

David McRitchie
David McRitchie
more options

Disable "McAfee Site Advisor" extension which was just updated to 3.4.0, which probably took it out of the addons block list.

  • "Ctrl+Shift+A" > find McAfee Site Advisor and use "Disable", and then restart Firefox.
  • Do a Google Search no problem
  • It seems that if you re-enable Site Advisor again, and restart Firefox you are okay. At least you know where to look if you get the error again or Google searches slow down.