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Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
From the Microsoft 365 home page select Install apps. Select Install (or depending on your version, Install apps> ). From the home page select Install apps (If you set a different start page, go to aka.ms/office-install .) For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn/account.
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Windows 10 and Windows 11 in S mode FAQ - Microsoft Support
About Windows 11 in S mode. Windows 11 in S mode is a version of Windows 11 that's streamlined for security and performance, while providing a familiar Windows experience. To increase security, it allows only apps from Microsoft Store, and requires Microsoft Edge for safe browsing.
Open the Camera in Windows - Microsoft Support
Windows 11 Windows 10. To open up your webcam or camera, select the Start button, then select All apps, and then select Camera in the list of apps. If you have multiple cameras, you can switch between them by selecting Change Camera at the top right once the Camera app is opened. Open Camera.
Download drivers and firmware for Surface - Microsoft Support
To find the link for the driver you need, select the dropdown list below and then scroll through it to find the type of Surface you have. After you've selected it, you'll see the available links for that type of Surface device model. Select the link for your model to get the latest firmware and drivers for sound, display, ethernet, and Wi-Fi.
Sign in to SharePoint - Microsoft Support
Go to office.com, and sign in to your work or school account. In the upper left corner of the window, select the app launcher > All apps > SharePoint. Tip: If you don't see the SharePoint app under All apps, use the Search box near the top of the window to search for SharePoint. For more information, see Where to sign in to Microsoft 365.
Applies To: SharePoint in Microsoft 365
Tips to improve PC performance in Windows - Microsoft Support
The tips are listed in order, so start with the first one, see if that helps, and then continue to the next one if it doesn’t. 1. Make sure you have the latest updates for Windows and device drivers. 2. Restart your PC and open only the apps you need. 3. Use ReadyBoost to help improve performance. 4. Make sure the system is managing the page ...
Create a drop-down list - Microsoft Support
Select the cell in the worksheet where you want the drop-down list. Go to the Data tab on the Ribbon, and then Data Validation. Note: If you can’t select Data Validation, the worksheet might be protected or shared. Unlock specific areas of a protected workbook or stop sharing the worksheet, and then try step 3 again.
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
AVERAGE function - Microsoft Support
Syntax. AVERAGE (number1, [number2], ...) The AVERAGE function syntax has the following arguments: Number1 Required. The first number, cell reference, or range for which you want the average. Number2, ... Optional. Additional numbers, cell references or ranges for which you want the average, up to a maximum of 255.
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
将 Windows 家庭版升级到 Windows 专业版 - Microsoft 支持
若要手动从Windows 11 家庭版升级到Windows 11 专业版,请先检查运行的版本和激活状态:. 选择“ 开始 ”>“ 设置 ”>“ 系统 ”>“ 激活 ”。. 在“ 激活 ”页面顶部,可以看到你的版本:家庭版或专业版。. 你还将在“ 激活状态 ”下看到是否已激活。. 打开激活 ...
How to troubleshoot problems that occur when you start or use Word
Click Options, and then click File > Export. Name the file "Wddata.reg", and then save the file to the desktop. Click Edit > Delete, then click Yes. Exit the Registry Editor and start Word. If Word starts and works correctly, you have resolved the problem (a damaged Word Options registry key).