Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

after opening a certain website, I can't close firefox anymore

  • 3 பதிலளிப்புகள்
  • 24 இந்த பிரச்னைகள் உள்ளது
  • 4 views
  • Last reply by tonie3

I opened a website in google and I got a tiny webpage saying: This page on http://protectremovevirusxpnow.com says: Windows Security has found critical process activity on your system and will perform fast scan of system files. The only button you can press is OK. I have no windows running on my MAC. Also the tabs are gone, except the tab Firefox. But you can't close firefox. The only thing I can do is to shutdown the whole computer by the powerbutton. What can I do? Thanks,

I opened a website in google and I got a tiny webpage saying: This page on http://protectremovevirusxpnow.com says: Windows Security has found critical process activity on your system and will perform fast scan of system files. The only button you can press is OK. I have no windows running on my MAC. Also the tabs are gone, except the tab Firefox. But you can't close firefox. The only thing I can do is to shutdown the whole computer by the powerbutton. What can I do? Thanks,

All Replies (3)

Hi sierui,

I have the same problem. Don't know what to do though so not entirely helpful there! But I found the same issue on this thread - https://support.mozilla.com/is/questions/811477 - although none of the answers are particularly useful for mac users, there might be a slight chance that someone will resolve the problem in the near future.

Also, after rebooting my mac, it seems the pop up window with the message 'Windows Security has found ........' didn't pop again.

Instead of restarting your Mac, you can "Force Quit" Firefox. In the Apple Menu, select "Force Quit...", then select Firefox and Force Quit.

I did do that beforehand, but force quitting firefox didn't resolve the issue at all, after I restarted firefox again the pop up came up straight away. Obviously reopening the last webpage.

I have now switched to google chrome for the time being as this issue seems to be strongly related to firefox itself.