Skip to main content Microsoft Defender Microsoft Entra Microsoft Intune Microsoft Purview Microsoft Security Copilot Microsoft Sentinel View all products AI-powered cybersecurity Cloud security Data security & governance Identity & network access Privacy & risk management Security for AI Small and medium business Unified SecOps Zero Trust Pricing Services Partners Why Microsoft Security Cybersecurity awareness Customer stories Security 101 Product trials How we protect Microsoft Industry recognition Microsoft Security Insider Microsoft Digital Defense Report Security Response Center Microsoft Security Blog Microsoft Security Events Microsoft Tech Community Documentation Technical Content Library Training & certifications Compliance Program for Microsoft Cloud Microsoft Trust Center Security Engineering Portal Service Trust Portal Microsoft Secure Future Initiative Business Solutions Hub Contact Sales Start free trial Microsoft Security Azure Dynamics 365 Microsoft 365 Microsoft Teams Windows 365 Microsoft AI Azure Space Mixed reality Microsoft HoloLens Microsoft Viva Quantum computing Sustainability Education Automotive Financial services Government Healthcare Manufacturing Retail Find a partner Become a partner Partner Network Microsoft Marketplace Software companies Blog Microsoft Advertising Developer Center Documentation Events Licensing Microsoft Learn Microsoft Research View Sitemap

Cookies are small files that Web sites put on your computer hard disk drive when you first visit.

Think of a cookie as an identification card that’s uniquely yours. Its job is to notify the site when you’ve returned. Cookies should not be confused with viruses. While it is possible to misuse a cookie in cases where there is personal data in it, cookies by themselves are not malicious. 

Many Web sites, including Microsoft’s, use cookies. Cookies tell us how often you visit pages, which helps us find out what information interests you. In this way, we can give you more of the content you like and less of the content you don’t. 

Cookies can help you be more efficient. Have you ever put something in a virtual shopping cart in an online store and then returned a few days later to find that the item is still there? That’s an example of cookies at work.

Cookies let you store preferences and user names, register products and services, and personalize pages.

But if you never register or leave personal information at a site, then the server only knows that someone with your cookie has returned to the Web site. It doesn’t know anything else.

You’re in charge of deciding whether we know anything about you.

For a more detailed explanation, see Microsoft Help and Support: Description of Cookies.

Related posts