Find your Windows product key - Microsoft Support
Learn how to find your Windows product key for activation or when to use a digital license instead.
Applies To:
Microsoft account dashboard
Change notification settings in Windows - Microsoft Support
Learn how to change app notifications, banners, and sound settings in Windows.
OneNote help & learning
Get answers to all of your OneNote questions with our how-to articles, training videos, and support content.
Microsoft Authenticator のダウンロード - Microsoft サポート
Microsoft Authenticator アプリは、2 段階認証を使用しているときにアカウントにサインインするのに役立ちます。
在 Excel 中将 IF 与 AND、OR 和 NOT 函数配合使用 - Microsoft 支持
如何将 IF 函数 (与 Excel 中) AND、OR 和 NOT 函数结合使用，以在给定值之间进行逻辑比较。
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App, Excel for Windows Phone 10
How to use the taskbar in Windows - Microsoft Support
Learn how to use the taskbar features in Windows. Hide the taskbar, pin an app, change the location, and more with taskbar settings.
Receive files over Bluetooth - Microsoft Support
Use the Settings app in Windows 10 to receive files over Bluetooth.
Add an app to run automatically at startup in Windows 10
Learn how to add an app to run automatically at startup. Select the Start button and scroll to find the app you want to run at startup.
Using your keyboard - Microsoft Support
Discover how to effectively utilize your computer keyboard and master various keyboard shortcuts for efficient computing.
Change your keyboard layout - Microsoft Support
Learn how to customize your keyboard for a specific language or format to control which characters appear on the screen when you press the keys.