This cumulative update for Windows 11, version 25H2 and 24H2 (KB5079473), includes the latest security fixes and improvements, along with non-security updates from last month’s optional preview release. 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.

摘要 Email 簽名能在你的商業溝通中建立專業一致性，並確保收件人在每則訊息中都擁有你的聯絡資訊。 在Outlook中，你可以為不同用途設定多個簽名 (內部與外部、個人與商務) ，並選擇是否自動包含在新郵件、回覆或轉寄中。 你的簽名可以包含文字、連結、圖片和圖片 (，例如你的手寫簽名或標誌 ...

Summary Windows 11, versions 24H2 and 25H2 share a common core operating system with an identical set of system files. Therefore, the new features in Windows 11, version 25H2 are included in the latest monthly quality update for Windows 11, version 24H2 but are in an inactive and dormant state. These new features will remain dormant until they are turned on through the “enablement package ...

Learn how to use Snipping Tool to capture a screenshot, or snip, of any object on your screen, and then annotate, save, or share the image.

Learn how to find a Windows product key for activation, and when you'll use a digital license instead.

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription. Having problems with your product key?

Adding a work or school account to Windows is a straightforward process that enhances your access to organizational resources and services. This article provides an overview and answers to some frequently asked questions (FAQ) about adding a work or school account to your Windows device using applications such as Microsoft Outlook or Edge.

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

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