Update drivers manually in Windows - Microsoft Support
Learn how to update drivers in Windows using Device Manager to update or reinstall a driver.
如何登录到 Hotmail - Microsoft 支持
Hotmail 现在是 Outlook.com。 了解如何登录以访问 Outlook.com、Hotmail、Live 或 MSN 电子邮件帐户。
Applies To:
Outlook.com
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
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
Tips to improve PC performance in Windows - Microsoft Support
Learn how to improve Windows PC performance if your device is running slowly.
Free up drive space in Windows - Microsoft Support
Learn how you can free up drive space in Windows. Keep your PC running smoothly and up to date by increasing the disk space.
Enable TPM 2.0 on your PC - Microsoft Support
Learn how to check if your PC is capable of running TPM 2.0 or how to enable TPM 2.0 to upgrade to Windows 11.
Ways to install Windows 11 - Microsoft Support
Learn how to install Windows 11, including the recommended option of visiting the Windows Update page in Settings.
How to sign in to or out of Outlook.com - Microsoft Support
Learn how to sign in or out of your Outlook.com email account, and get solutions for common login issues.
Applies To:
Outlook.com
What's the difference between a paid Microsoft 365 subscription and the ...
A Free badge means an active Microsoft 365 Family or Personal subscription isn't associated with the account you signed in with. Only the free web versions of Word, Excel, and PowerPoint are available to you.