How to Stop Windows 10’s Antivirus from Sending Files to Microsoft

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By default, Windows 10’s built-in antivirus automatically sends samples of suspicious files from your computer to Microsoft. While this helps boost security, you can choose to disable this option, if you like. Here, we’ll show you how to turn this option off on your PC.


Windows 10’s built-in antivirus program, known as Windows Security or Windows Defender, sends suspicious files to Microsoft so that the company can learn about new viruses and other threats.

These sample files submitted from your computer help Microsoft equip its antivirus with new virus definitions. That way, the next time this virus or malware is found on someone’s PC, the built-in Windows 10 antivirus can block that file straightaway.

Microsoft tries not to include any personal information in these submitted files. If there’s a file that likely contains any data about you—for example, a Microsoft Word document with a suspicious-looking macro—Windows will ask you for permission before sending the file.

How to Stop Automatic Sample Submission

You can stop Windows 10’s antivirus from sending files to Microsoft if you don’t feel comfortable with this feature. The choice is yours. To disable the option, open the “Start” menu, search for “Windows Security,” and click the app in the results.

When the Windows Security window opens, click “Virus & threat protection.”

Scroll down and look for the “Virus & threat protection settings” section. Click the “Manage settings” link.

Here, find the “Automatic sample submission” option and turn it off.

You’re all set.

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