Free tool helps prevent viruses

One of the best defenses against viruses and other kinds of malicious software is ensuring that all of your built-in security settings are turned on and running smoothly.

Microsoft offers a free tool that will help diagnose and fix Windows security settings, so you don’t have to think about it.

Note: The Microsoft Malware Prevention troubleshooter does not work with Windows 8. Windows 8 includes Windows Defender, which is turned on by default.

Run the Microsoft Malware Prevention troubleshooter

Some examples of what it does:

  • Checks status of your antivirus software and prompts you to update it.
  • Checks Windows Update to help ensure your computer is kept current and secure.
  • Resets User Account Control to default to help prevent unauthorized changes to your computer.
  • Checks Internet Explorer privacy settings for safer browsing.
  • Clears Internet Explorer history and cache.
  • Checks if your version of Internet Explorer is up to date.

Learn more about the Microsoft Malware Prevention troubleshooter

About the Author
Eve Blakemore

Group Manager, Trustworthy Computing

Eve Blakemore is a Group Manager for Trustworthy Computing who delivers consumer guidance around the latest trends in security and privacy. Eve joined Microsoft in 1998 and has worked in corporate and field roles with Microsoft Learning, US Public Sector, Read more »

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  1. Anonymous


    This uninvited "Inbox" shows up when I select internet browser icon on Dell screen.  I use Google. "Inbox" pitches an email service.  I see nothing about it  related to Google.  Seems like a hi-jacking.  Also, it has been impossible to locate a usable, applicable venue for contacting appropriate genuises about this.  Hence, I am using this blog, hoping appropriate parties will pick it up and take care of the problem.  In the meantime, I am taking two actions:  1)  I safely accesss my regular web browser homepage by selecting my Dell start button, typing goole in the search field and selecting in the results; 2)  I will run both Mechanical Professional and Malware programs, hoping to cleans my computer of "Inbox."  First saw problem yesterday.  Thank you.

  2. Anonymous

    Well, tried installing but windows phone is not supported

  3. Anonymous

    Tried to send results, But none of codes worked. very difficult to recognize

  4. Anonymous

    Doesn't work on my new Windows 8 PC.  Not sure why Microsoft Security sent it.  May be malware.

  5. Anonymous

    Evidently this program will not work in Windows 8. I just tried and got a message that it is not compatible with my system.

  6. Anonymous

    I ran the malware prevention troubleshooter   but never received any report/Itjust said we will fix things/

    is it legit?

  7. Anonymous

    Could not install it, Error 80072EFD

  8. Anonymous

    Couldn't get malware prevention  troubleshooter to finish what it started

  9. Anonymous

    Tried installing as well but Windows 8 is not supported

  10. Anonymous

    Didn't run this as following good practice it is reported as being from an untrusted location.

    Good one Microsoft.

  11. Anonymous

    Just uninstall anything that says INBOX and change your homepage back to what you'd like.

    Remember, it's easier to fix a no that should have been a yes, than a yes that should have been a NO.

    Think before you click next.

  12. Anonymous

    The program will not run on my Windows 8 64-bit system

  13. Anonymous

    It will not work with Windows 8. I hope that Microsoft will work on further development of tools like these.


    The blog clearly states : "The Microsoft Malware Prevention troubleshooter does not work with Windows 8."

    So of course 5 out of 13 of the previous posters are taking the time and trouble to say, Hey, what gives, it doesn't work on Windows 8 …

    No-one has yet noticed that this tool will reset IE privacy settings and also set Microsoft Updates to download-and-install-without-asking, which is not necessarily what eveybody wants.

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