I rcvd the following error : Exc in ev handl: Error: Bad NPObject as private data! What cause this problem ? Thanks

Whenever opening a new link, rcvd the following error : Exc in ev handl: Error: Bad NPObject as private data!

this issue can be caused by the McAfee Site Advisor extension. See:
* https://community.mcafee.com/message/203466
* https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

Similar Messages

When i open or close a page i will get ( EXC in ev handi:error: bad NPobject as private data...this happened after downloading new version

I never had this problem till had to down load the new Firefox, now i get this message rather closing a page or opening it..
Exc in ev handi: Error: Bad NPObject as private data. what can i do//????

Disable McAfee siteadvisor and check the problem still persist or not?

I don´t get any Java Script referral on the: Exc in ev handl: Error: Bad NPObject as private data, what is then my problem?

Exc in ev handl: Error: Bad NPObject as private data
This is the pop up that keeps annoying me in FF. You send me the question: The box that the error is in says something about JavaScript?
I´m answering NO!

This issue can be caused by an extension that isn't working properly (McAfee Site Advisor).
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

I am gettng the following popup when using firfox as my browser: Exc in ev handl: Error: Bad NPObject as private data!

In the past few days I have been getting the following popup when I use firefox as my browser: Exc in ev handl: Error: Bad NPObject as private data!
I assume it came from your latest update. I have windows vista with a 64 bit processor, and I am using the latest version of firefox. I checked to see if I was getting the same error message with explorer and I am not. It appears to be some sort of conflict with java script. Can this be corrected?

re: recommendation -- "Remove McAfee Site Advisor and other extensions/plugins reported in the following lists of Blocked/Problematic extension: "
NO -- I use it to protect my surfing! Why must FireFox insist on constantly breaking 3-rd party vendor apps!?! Even IE doesn't do this.
For all the ballyhoo about FF and how great it is -- it ISN'T when it comes to how it supports other companies apps. (RealPlayer, Google, McAfee, etc.)
Shame on them. I shouldn't have to give up functionality, and in this case protection -- just to use FF

Why do I get the following msg's on startup start Firefox? (1) Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function; (2) Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function; (3) Exc in ev handl: Error: Bad NPObject as private data!

I get the following msg's. This happening more often, and when I back out to restart it may take a couple of times so that I do not get the error msg's?
Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function
Exc in ev handl: Error: Bad NPObject as private data!

This issue can be caused by the McAfee Site Advisor extension
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

A message will pop up (Exc in ev handl: Error: Bad NPObject as private data!) and the tab I was on will close out and reopen in a new window. Why is it happening and how do I stop it?

Okay, I will have a window open with 4 tabs open. At first, everything is fine, but after a day or so, a message will pop up on screen saying "'''Exc in ev handl: Error: Bad NPObject as private data!'''" and after you close it out, the tab you were on will close and reopen in it's own window. I then have to shut down all both old and new windows and open a new window with my original 4 tabs again. It will work fine until a few days pass and it starts over again.

This issue can be caused by the McAfee Site Advisor extension
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

Since I upgraded my Firefox..whenever I click on a link i get this error message...Java Script Exc in ev handl: Error: Bad NPObject as private data! Then I have to click ok to get the page to open.

Since I upgraded my firefox..I get this box most of the time when I click on a link to go to another page...
Java Script
Exc in ev handl: Error: Bad NPObject as private data! Then I have to click ok to get the page to open.

That issue can be caused by the McAfee Site Advisor extension
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

Error msg received on opening tab: Exc in ev handl: Error: Bad NPObject as private data!

Very simple- the following error message appears when I open a new tab, either with a web page or blank:
Exc in ev handl: Error: Bad NPObject as private data!

Please see solution in http://kb.mozillazine.org/Problematic_extensions
for "McAfee Site Advisor".
(Windows): For best results you should uninstall '''McAfee Site Advisor''' from Control Panel > add/change programs (Programs and Features). Reboot the system. Then Reinstall from http://www.siteadvisor.com/ and reboot the system. When installing refuse other suggested (crapware) applications.
 Please mark "Solved" one answer that will best help others with a similar problem -- hope this was it.

After updating Firefox I am getting this message any time I do anything "Exc in ev handl:Error: Bad NPObject as private data"

This error happens each time I use Mozilla. especially when I click on an extension or try to work in any of my e-mail accounts (Yahoo, Gmail, or RCN). Sometimes I am able to continue by just clicking OK and other times it prevents me from completing my task. This started happening right after I downloaded and installed your latest version of Firefox. I see others are having the same problem. Error message is "Exc in ev handl:Error: Bad NPObject as private data"

That issue can be caused by the McAfee Site Advisor extension
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

Exc in ev handl: Error: Bad NPObject as private data! How do I ge rid of this?

Exc in ev handl: Error: Bad NPObject as private data! I get this error when opening and closing tabs. It only happens when using Firefox. I am running 7.0.1 on a 64 bit version of windows. While researching this problem I discovered thousands of people have the problem. This just started recently. No real fixes or causes have been found. One solution listed was to disable McAfee site adviser which I use and have no plans to remove. I really like Firefox but if I must choose between it and Site adviser I'll have to switch to another browser.

Please see solution in http://kb.mozillazine.org/Problematic_extensions
for "McAfee Site Advisor".
(Windows): For best results you should uninstall '''McAfee Site Advisor''' from Control Panel > add/change programs (Programs and Features). Reboot the system. Then Reinstall from http://www.siteadvisor.com/ and reboot the system. When installing refuse other suggested (crapware) applications.
 Please mark "Solved" one answer that will best help others with a similar problem -- hope this was it.

Exc in ev handl: Error: Bad NPObject as private data! what is this an how do i get rid of it...

Exc in ev handl: Error: Bad NPObject as private data!

Please see solution in http://kb.mozillazine.org/Problematic_extensions
for "McAfee Site Advisor".
(Windows): For best results you should uninstall '''McAfee Site Advisor''' from Control Panel > add/change programs (Programs and Features). Reboot the system. Then Reinstall from http://www.siteadvisor.com/ and reboot the system. When installing refuse other suggested (crapware) applications.
 Please mark "Solved" one answer that will best help others with a similar problem -- hope this was it.

Cada vez que abro una página web me aparece el siguiente mensaje: Exc in ev handl: Error: Bad NPObject as private data! ¿cómo puede arreglarlo??

Cada vez que abro una página web me aparece el siguiente mensaje: Exc in ev handl: Error: Bad NPObject as private data! ¿cómo puede arreglarlo?

Please see solution in http://kb.mozillazine.org/Problematic_extensions
for "McAfee Site Advisor".
(Windows): For best results you should uninstall '''McAfee Site Advisor''' from Control Panel > add/change programs (Programs and Features). Reboot the system. Then Reinstall from http://www.siteadvisor.com/ and reboot the system. When installing refuse other suggested (crapware) applications.
 Please mark "Solved" one answer that will best help others with a similar problem -- hope this was it.

Elke keer Exc in ev handl: Error: Bad NPObject as private data! na firefox 7

Na upgrade firefox 7 telkens de volgende mededeling:
Exc in ev handl: Error: Bad NPObject as private data!
Wat kan hieraan gedaan worden? Is het verstandig firefox 6 te gebruiken?

This issue can be caused by the McAfee Site Advisor extension
*https://community.mcafee.com/message/203466
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

Every time I switch tabs I get this message "Exc in ev handl: Error: Bad NPObject as private data!" What do I do to stop this message from coming up??

If I open up firefox & have more than one tab I get this message "Exc in ev handl: Error: Bad NPObject as private data!" whenever I switch tabs. What should I do to fix this problem?? Thanks for your prompt attention to this matter
-Kipp

This issue is caused by the McAfee Site Advisor extension
*https://community.mcafee.com/message/203466
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

Can anyone fix this issue? It is both on my home and office computer anf from online blogs it seems to be a large problem for many. Exc in ev handl: Error: Bad NPObject as private data!

Exc in ev handl: Error: Bad NPObject as private data!

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.

I rcvd the following error : Exc in ev handl: Error: Bad NPObject as private data! What cause this problem ? Thanks

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