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Download Microsoft Safety Scanner for Windows 11

Richard
Written by
Richard
Aug 28, 2021 Updated Sep 15, 2026 2 min read
Download Microsoft Safety Scanner for Windows 11
Download Microsoft Safety Scanner for Windows 11

Microsoft Safety Scanner is a free downloadable tool that finds and removes viruses, spyware, and other malware from your Windows 11 PC. Unlike standard antivirus software that runs constantly in the background, this tool only runs when you start it.

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Version 1.395.525.0 includes the newest threat definitions to catch recent computer infections. You can use this scanner as a backup safety check when your regular antivirus fails to open or stops working properly.

⚡ Quick Answer

Visit the official Microsoft Safety Scanner download page and select the correct version for your system. After downloading msert.exe, right-click it and choose “Run as administrator” to start the scan.

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System Requirements and Expiration

Your Windows 11 PC needs standard hardware to run the Microsoft Safety Scanner, and it works on both 32-bit and 64-bit systems.

How to Download and Use Microsoft Safety Scanner

  1. Choose the version matching your system architecture (64-bit is standard for Windows 11).
  2. Locate the downloaded msert.exe file in your folder.
  3. Right-click the file and select Run as administrator. Requires admin privileges.
  4. Accept the license agreement to proceed.
Windows 11 Microsoft Safety Scanner installation screen
windows 11 microsoft safety scanner install

Microsoft Safety Scanner Windows 11 is a free malware removal tool you can download directly from the official Microsoft website to check your computer for viruses. To get started, download the correct version for your PC, open the file with administrator permissions, and follow the setup steps to run a scan.

Windows 11 Safety Scanner scan type selection options
windows 11 safety scanner scan type

Check the SHA-256 signature (a unique code that proves the file hasn’t been altered) on the download page to verify the file’s integrity. More advanced users can use command-line options like /f:y to automatically start a full scan.

Progress bar during Microsoft Safety Scanner scan on Windows 11
windows 11 microsoft safety scanner progress

Troubleshooting Common Errors

Troubleshooting common errors when running Microsoft Safety Scanner on Windows 11 usually involves fixing permission issues, restarting your PC in Safe Mode if the scan freezes, or checking the error logs stored at 📁C:\Windows\debug\msert.log to find out why the application closed unexpectedly.

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Summary

Microsoft Safety Scanner is a free, portable tool for Windows 11 that helps remove malware, especially if your main antivirus is blocked.

Does Microsoft Safety Scanner replace my antivirus?

⚠️WarningNo, it does not. Microsoft Safety Scanner is an on-demand tool meant to supplement your existing security.

It lacks real-time protection features, meaning it cannot prevent new infections. Always keep Microsoft Defender Antivirus or another reputable security suite running for continuous, active protection against incoming threats.

Is Microsoft Safety Scanner free for 🪟 Windows 11?

Yes, the Microsoft Safety Scanner is completely free for all Windows 11 users. It is provided by Microsoft as a portable utility to help users clean their systems. You do not need a subscription or a license to download and run the tool for personal use on your devices.

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Tags: #Windows 11
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Richard

About the Author

Richard

Tech Writer, IT Professional

Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.

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