Microsoft JScript Runtime Error with error code 800A1391 on Yahoo

Original title: default_179583-1.js from - How do I permanently delete this popup in Yahoo?


When I open this popup I receive a Microsoft error message everytime for Microsoft JScript runtime error and the same code #800A1391.


Norton ran their Power Eraser program yesterday and I don't have any viruses, trojans etc. I also ran Malwarebytes and Super Antispyware before I called Norton.


I sent screen prints to Yahoo per their request but now they refuse to reply to my emails and Microsoft wants $99 to help me which I refuse to pay.


Yahoo is the only place I have this popup occur - nothing happens in Gmail or my website with GoDaddy.


I found in my registry and deleted it. I haven't found it anyplace else in my computer which is a Dell laptop with Windows Vista Home Premium.


I did many Google searches using the popup default name as well as Microsoft's code number and found many, many people who experience the same popup and want to know how to delete it. Unfortunately most of the advise online is that the popup is a virus which it definitely is not. Someone in Yahoo online says it is advertising.


Norton feels the problem is with Microsoft because of the Microsoft JScript runtime error message.............white "X" inside a red circle......Windows Script Host and references my C drive and file location

Error: 'document' is undefined

Code: 800A1391

Source: Microsoft JScript Runtime Error





Question Info

Last updated August 30, 2019 Views 10,144 Applies to:

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I just found this on a forum and did it on my computer. I believe this will do the trick! Open IE. Click Tools>Internet Options. Select the Security tab. Select "Restricted SItes". Click Sites. In the "Add this website to the zone" field, enter * Click Add, then Close, then OK Don't worry it's safe! I'm going to keep this for new problems as well! Michelle            

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