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"Login to Xmarks" keeps coming up and freezing our Firefox

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A box with "Login to Xmarks" keeps popping up on the screen. It freezes Firefox. We have to shut down the computer to open Firefox again. After a short time the box appears again. As far as we know we have never signed in for Xmarks. How do we get this off the computer?

A box with "Login to Xmarks" keeps popping up on the screen. It freezes Firefox. We have to shut down the computer to open Firefox again. After a short time the box appears again. As far as we know we have never signed in for Xmarks. How do we get this off the computer?

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Sometimes a problem with Firefox may be a result of malware installed on your computer, that you may not be aware of.

You can try these free programs to scan for malware, which work with your existing antivirus software:

Microsoft Security Essentials is a good permanent antivirus for Windows 7/Vista/XP if you don't already have one.


Further information can be found in the Troubleshoot Firefox issues caused by malware article.

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