This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

AVG.com has somehow become my browser's default search engine and my malware is stating that explorer.exe contains a leak. How do I fix this?

more options

I updated my browser to the latest Mozilla browser a few days ago. When closing Mozilla, I'm getting a message (I do not have the exact message) that a program cannot read an address and I need to click "ok" to close the program. Through observation of my Task Manager (I'm running Windows 8.1 as my o/s) the program is Firefox. Today, I ran a virus scan with my malware program and it states that I may have a leak with file explorer.exe. Plus, I have set in my Firefox settings for google to be my default browser. When I go to open a new tab in Firefox, the AVG search engine (even when I do not accept the cookies) pops up.

I updated my browser to the latest Mozilla browser a few days ago. When closing Mozilla, I'm getting a message (I do not have the exact message) that a program cannot read an address and I need to click "ok" to close the program. Through observation of my Task Manager (I'm running Windows 8.1 as my o/s) the program is Firefox. Today, I ran a virus scan with my malware program and it states that I may have a leak with file explorer.exe. Plus, I have set in my Firefox settings for google to be my default browser. When I go to open a new tab in Firefox, the AVG search engine (even when I do not accept the cookies) pops up.

All Replies (1)

more options

In reference to my earlier post stating "I updated my browser........ pops up."

Now I have two messages when I close Firefox. First message reads as follows:

"The exception Breakpoint. A breakpoint has been reached ()x8000000003) occurred in the application at location 0x67ef5fbd.

Click on ok to terminate the program."

The next message reads as follows:

"The instruction at 0x7774ce8c referenced memory of 0xffffffff. The memory could not be read.

Click on ok to terminate the program."