After you click, a dialog box will appear asking you to confirm the new extension. Click “Add.” Next, Chrome will inform you that Prevent Duplicate Tab has been successfully installed by displaying another dialog box in the top-right corner of your browser. An icon for the program should also appear in the top-right area of your browser.
![Duplicate Duplicate](/uploads/1/2/5/6/125600480/149088356.png)
Ok so this isn't new to me, I have had this happen a few times, but managed to fix it, but this time it wont fix and is driving me nuts, every so often chrome will open some sort of dodgy page like. HOW TO EARN MONEY HOW TO EARN THOUSANDS IN HOURS.
And one of the websites is some sort of windows support microsoft scam that pops up alerting there' s virus on my computer. And call this number to remove. The link is (I wouldn't advise to go on it). And some other things that pop up now and then, cannot remember. Basically I have tried the obvious to fix it. This includes the following Removed any unwanted programs Scanned with adwcleaner Scanned with malwarebytes Scanned with my main anti virus McAfee.
![How To Open A New Duplicate Tab On Chrome For Mac How To Open A New Duplicate Tab On Chrome For Mac](http://img.gtricks.com/2015/11/Duplicate-tab-helper.png)
Removed anything that came up in that search. And yet it doesn't do anything. I would scan with one more program. Download Spybot version 1.6.2 and run that.
Spybot is a very underrated program that is extremely effective in situations like these. One thing I would check as well is the startup programs. You can find these by clicking start, typing in msconfig and press enter and hit the startup tab. Uncheck all the programs that don't need to be in there. If within that list you see an entry that looks odd, investigate it and it might be your virus, from there you can know where it is. Also, can you open your task manager and take a snapshot of all the programs running? Might be able to find it that way.