Microsoft Store apps updates Change log Improvements This security update contains fixes and quality improvements from KB5074109 (released January 13, 2026). KB5077744 (released January 17, 2026), and KB5078127 (released January 24, 2026). The following summary outlines key issues addressed by this update. Also, included are available new features.

Xbox Support ... Xbox Support

Summary A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This is a 48‑digit number that lets you regain access to your drive.

Need help with an Xbox console, an Xbox game, or Xbox network? Find out how to get in touch with us.

什么是Microsoft启动器？ Microsoft Launcher 提供了新的主屏幕体验，使你能够在所有设备上提高工作效率。 Microsoft Launcher 是高度可自定义的，允许你在手机上组织所有内容。 通过个性化订阅源，可以轻松查看日历、执行列表和便笺。 将 Microsoft Launcher 设置为新的主屏幕时，可以使用喜欢的应用重新开始 ...

Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.

第一次設定 Office App： 開啟 Office 應用程式，例如 Excel。 使用您的 Microsoft 帳戶或 Microsoft 365 公司或學校帳戶登入。 附註: 如果使用由 21Vianet 營運的 Office 365，請輸入與您的 Microsoft 365 由 21Vianet 訂閱營運的電子郵件地址和密碼，然後登入。

Find the official Microsoft licensing terms for Xbox and gaming applications for mobile devices and iPads.

Learn how to download and install apps you need from your Microsoft 365 business subscription.

You can download Office apps to your Android tablet or Android phone from the Google Play store.