This is generally caused by browser add-ons or 3rd party programs on your computer. To test, start browser in safe mode, or disbable all plug ins to see if the underlines disappear.

For more help on this please click on the browser you are using:

Firefox, Chrome, Internet explorer, Safari

If the underlines disappear, one of your add-ons or extensions is causing the issue, and you will need to disable each one of the add-ons or extensions until you find the cause.

Firefox, Chrome, Internet Explorer, Safari

If you're still seeing suspicious pop-ups, unwanted toolbars, redirects, strange Google search results, or other unexpected behavior on your computer, you may have been tricked into installing malicious software (also known as 'malware') on your computer. Please click here to refer to the below Google article to help with this issue.

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