Choose from a variety of Surface devices and accessories to get help.

Data Execution Prevention (DEP) is a technology built into Windows that helps protect you from malicious code launching from areas of memory that have been designated as for data only.

If you travel often, your new locations may show as unusual activity. To travel without disruptions or alerts, we recommend using Microsoft Authenticator to sign in.. If you get an email about unusual activity and you're not sure if it's from Microsoft, you can safely sign in to your Microsoft account any time without clicking links in the email.

Treat all email as junk unless it comes from someone in my Safe Senders or Safe Recipients lists, or from senders in my organization Select this option if you want email messages from senders that aren't defined in your Safe Senders List or Safe Recipients List or email messages from outside your organization to be treated as junk email. Email messages identified as junk email are moved to the ...

从 Microsoft 获取免费的 Windows 主题，以个性化设置电脑的背景、颜色和声音。

App & browser control in Windows Security provides the settings for Microsoft Defender SmartScreen, which helps protect your device from potentially dangerous apps, files, websites, and downloads.