Free PC safety scan

Think your computer might have a virus? The Microsoft Security scanner is a free download that will scan your computer and help you remove viruses, spyware, and other malicious software.

Download Microsoft Safety Scanner

The scanner is not a replacement for antivirus software. It contains the latest anti-malware definitions, but it works with your antivirus software. The Microsoft Security scanner expires after 10 days, but you can download the newest version again for free. Antivirus software like Microsoft Security Essentials is also free, but provides real-time scanning and does not expire after 10 days.

Get more information about the Microsoft Security Scanner.

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

    our system is being hacked via psuado tunnel server which mounts to our system and controls our system.  your assistance is is needed.

    we have no tunnel server on our network

  2. Anonymous

    This is great.  My regards to Microsoft and the professionalism you show.  I wish you and your employees the longest days and the most pleasant evenings.

    Kevin Michael Callihan, Sr. Esq. [Retired, Disabled person with onset date of 1/10/2001]

  3. Anonymous

    I Have Virus or Something On My Laptop & I Have Win.8Installed & I Just Don't Trust There Security Scans…

    They Keep Telling My Computer is Clean.. NO WAY!

    Something Has Slowed Me Wayyyy Down..

    Thank You

  4. Anonymous

    I have the Microsoft Security Essentials and I used to use AVAST , I will try the free scanner

  5. Anonymous

    My computer is already slow.  Downloading a 69MB security scanner file will probably bring it to its knees.

  6. Anonymous

    Your Safety System Microsoft Essentials checket my System for a long time. i think, it's realy good

  7. Anonymous

    I hesitate to download any free program that might hurt my PC. there is no guarantee that it won't hurt my PC. Even from a company like Microsoft its still makes me think first, before downloading the program.Thanks anyway.

  8. Anonymous

    Scan has been done yesterday 20;30 during more than 3 hours

    I have no info on the results.

    Do i have to run the scan again?

    Thank you for help.

  9. Anonymous

    one computer is complete out of order the troyan horse is in

    your advise is to late when I start that pc than is the virus in the picture

    but I download them for this notebook.I try it thank you

  10. Anonymous

    something keeps making my files disappear, all byt 3 ions were left on my desktop which went completely black on me and I still cannot get themes working, and the reader in gadgets does not work anymore, not sure what is going on.

  11. Anonymous

    My computer saays that I must be signed in as system administrator to run this program.  This isa home computer and I have no idea what a system administraqtor is or how to sign in as one.  Please heol

    Thanks  – 

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