Free tool automatically checks and builds up your computer’s defenses

Want to know an easy way to make sure you have the most up-to-date security settings and software for your Windows operating system? Microsoft offers a free downloadable tool that scans your computer and makes recommended changes based on your current settings.

Run the Microsoft Malware Prevention troubleshooter.

The following are a few examples of how the Microsoft Malware Prevention troubleshooter helps protect your computer:

  • It turns on your Windows Firewall. Enabling your Windows Firewall will block communications to your PC that may be malicious software.
  • It checks your anti-virus protection status. You will be prompted to update your anti-virus program if needed. If you have no anti-virus program installed, it tells how you can download Microsoft Security Essentials (free) or learn about other security software partners.
  • It turns on automatic updating. Windows Update automatically downloads and installs the latest security and feature updates from Microsoft to help enhance the security and performance of your PC.

Find out what else the Microsoft Malware Prevention troubleshooter can do.

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

    Not recommended.

    Updates regularly stop applications I use every day working – such as Camtasia studio screen recorder and even Windows Media Player.

    There's nothing worse than wanting to start a days work to find that Windows has installed something that prevents an essential program from working – and having to spend time leading a previous restor point.

    Avoid automatic updates at all costs!

  2. Anonymous

    my update turns it's self off then when i turn it back on it will not update

  3. Anonymous

    Is there an offline version of this tool that can be downloaded and carried to a computer that can't get internet access at the moment? I'm having problems that should have no relation to my isp disconnect, but for many others that may be part of the mix.

  4. Anonymous

    I have had Microsoft security for several years now and would recomend everybody use their free security essentials it leaves the others for dead, it has in the past warned me of incoming problems and sorted them out for me, the term use it or loose it comes to mind,I have tried the other companies software and it does not match up to microsoft, Keep up the good work, I would prefer to wait a few more seconds when I start up than wast hours getting my computer running again due to a virus.and that does not take into account the lost data.

  5. Anonymous

    why would i want this troubleshooter to turn on my windows firewall? i have it turned off becasue i use the avg firewall. wouldn't it be better to have it check that a firewall is being used?

  6. Anonymous

    Now when I try to run some exe files I get "Data of this type is not supported". ie Saitek driver exe file.

    User Account -Locked out

    System Restore – won't start.

    Tried to run the MS Fixit – Data of this type not supported

    In short, plain garbage so time for a complete re-build.

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