Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.

Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

How to use the COUNTIF function in Excel to count the number of cells that meet values you set.

Learn about Windows service packs and download the latest updates for Windows 10 and Windows 8.1

Learn about getting started with the new Microsoft Defender on your personal devices including Windows, Mac, Android, and iOS.

If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page.You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

Discover how to effectively utilize your computer keyboard and master various keyboard shortcuts for efficient computing.

Microsoft Support offers assistance for Microsoft products, including how-to articles, videos, and training for various software and devices.

Microsoft Edge を使用すると、Web を参照するときにパスワードを簡単に保存できます。 デスクトップまたはモバイル デバイスの Edge ブラウザーで新しいパスワードを入力すると、ユーザー名とパスワードを記憶するかどうかを Microsoft Edge から確認するメッセージが表示されます。

Learn how to reset your PIN if you aren't signed in to Windows and having trouble using your PIN.