Edit a PDF - Microsoft Support
To edit a PDF, open it in Word. This works best with PDFs that are mostly text. PDFs of book chapters or something that looks like a manuscript from a copier won't be formatted well in Word.
Applies To:
Word for Microsoft 365, Word 2021, Word 2019, Word 2016
How to get support for Outlook.com - Microsoft Support
If you need help with Outlook.com, you can read our self-help content, or get support via email.
Applies To:
Outlook.com
Fix OneDrive sync problems - Microsoft Support
Learn how to fix common OneDrive personal or OneDrive for Business sync problems.
Applies To:
OneDrive for Business, SharePoint Server Subscription Edition, SharePoint Server 2019, SharePoint Server 2016, SharePoint Server 2013 Enterprise, SharePoint in Microsoft 365, Office for business, Office 365 Small Business, Microsoft 365 admin, OneDrive (work or school), OneDrive (home or personal), OneDrive (work or school) operated by 21Vianet, OneDrive for Mac, OneDrive for Windows, SharePoint admin center, SharePoint in Microsoft 365 Small Business
Create a drop-down list - Microsoft Support
You can insert a drop-down list of valid entries (also called a drop-down menu or drop-down box) in Excel to make data entry easier, or to limit entries to certain items that you define.
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
在 Windows 中查找 BitLocker 恢复密钥 - Microsoft 支持
了解在 Windows 中查找 BitLocker 恢复密钥的不同方法，并了解如何在系统上激活 BitLocker。
Troubleshooting verification code issues - Microsoft Support
Learn what you can do if you're not receiving account aign-in verification codes.
Applies To:
Microsoft account dashboard
How to use two-step verification with your Microsoft account
Get answers to some basic questions about what two-step verification is, and how to set it up and use it to help keep your Microsoft account more secure.
如何安装最新版本的 DirectX - Microsoft 支持
本文介绍如何获取最新版本的 DirectX 以启用系统上的游戏和多媒体应用程序。
Schedule a Microsoft Teams meeting from Outlook
Learn how to add Teams meetings to Outlook calendar using our step-by-step guide. Say goodbye to scheduling headaches and hello to seamless collaboration!
Applies To:
Microsoft Teams
How to set up and test microphones in Windows - Microsoft Support
Get tips for how to set up and test microphones in Windows.