To learn more about differences between security updates, optional non-security preview updates, out-of-band (OOB) updates, and continuous innovation, see Windows monthly updates explained.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Microsoft正在对永久许可证的激活体验进行现代化改造。 从 2025 年 12 月 3 日起，传统的基于电话的产品激活自动化过程已从电话转移到在线。 客户将改用产品激活门户： 产品激活门户 新的数字工作流提供更安全、更可靠且用户友好的激活体验，并有助于防止欺诈。 虽然该过程已更新，但脱机激活 ...

How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.

How to add a signature to your Word documents. You can also use the Signature Line command in Word to insert a line to show where to sign a document.

iOS Android To install Authenticator on your iOS device Scan the QR code or download and install Authenticator from the Apple app store.

Learn how to use the taskbar features in Windows. Hide the taskbar, pin an app, change the location, and more with taskbar settings.

Learn how to fix problems signing into your Microsoft account. Resolve password verification, locked account, and other Microsoft account login issues.

OneNote is a versatile digital notebook that allows you to capture thoughts, ideas, and to-dos, and sync them across all your devices. As part of the Office family, OneNote offers a familiar interface and integrates seamlessly with other Microsoft Office applications. Availability OneNote is available on multiple platforms: Windows Mac iPad iPhone Android Web Want more than OneNote? Try ...

Explore tips to change your Microsoft Teams background. Learn how to replace, blur, or change your Teams background image before or during a meeting.