Office Help & Training
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Examples of query criteria - Microsoft Support
Use criteria in an Access query to find specific information from your desktop database.
Applies To:
Access for Microsoft 365, Access 2021, Access 2019, Access 2016
KB5001716: Update for Windows Update Service components
Notes about this update. When this update is installed, Windows may attempt to download and install feature updates to your device if it is approaching or has reached the end of support for your currently installed Windows version.
Install the Windows 8.1 Update (KB 2919355) - Microsoft Support
Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.
Microsoft Bing help - Microsoft Support
Explore subscription benefits, browse training courses, learn how to secure your device, and more.
Set up a security key as your verification method
Delete a security key from your security info. If you lose or no longer want to use a security key, you can delete the key from your security info.
激活 Office - Microsoft 支持
如何激活预安装在新 Windows 10 计算机上的 Office 或使用新的产品密钥。
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Publisher 2016, Office 2016, Microsoft 365 for home, Office for business, Office.com, Project for Office 365
My Outlook.com account has been hacked - Microsoft Support
If your account has been hacked it means that someone stole your password and might be using your account to access your personal information or send junk email.
Applies To:
Outlook.com
修复麦克风问题 - Microsoft 支持
如果麦克风功能出现问题，则以下信息可以帮助你排除故障和解决问题。 确保应用有权访问麦克风. 如果在更新麦克风后未检测到Windows 11，您可能需要授予应用使用它的权限。
How to check if an app or program is installed in Windows 10
To find out if an app or program is installed in Windows 10, select Start > Settings > Apps.