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Change screen brightness in Windows - Microsoft Support
To find out if your PC supports this, select Settings > System > Display. Select Brightness, look for the Change brightness automatically when lighting changes check box, and then select it to use this feature. This automatic setting helps make sure your screen is readable wherever you go. Even if you use it, you can still move the Brightness ...
Calculate the difference between two dates - Microsoft Support
Use the DATEDIF function when you want to calculate the difference between two dates. First put a start date in a cell, and an end date in another. Then type a formula like one of the following. Warning: If the Start_date is greater than the End_date, the result will be #NUM!.
Applies To: Excel for Microsoft 365, Excel 2021, Excel 2019, Excel 2016
I forgot the username or password for the account I use with Microsoft ...
The account you associated with your Microsoft 365 for home product is the same email you used when you bought or activated Microsoft 365 the first time, or what you use to sign in and install or manage Microsoft 365 from your account portal. For help with this username or password, select from the options below:
Applies To: Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Excel 2021, Word 2021, Outlook 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2019 for Mac, Word 2019 for Mac, Outlook 2019 for Mac, OneNote 2019 for Mac, Office 2019 for Mac, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, Office 2016, OneNote for Mac, SharePoint in Microsoft 365, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Activation, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin, Project for Office 365
Use the On-Screen Keyboard (OSK) to type - Microsoft Support
To open the On-Screen Keyboard. Go to Start , then select Settings > Accessibility > Keyboard, and turn on the On-Screen Keyboard toggle. A keyboard that can be used to move around the screen and enter text will appear on the screen. The keyboard will remain on the screen until you close it. Note: To open the OSK from the sign-in screen, select ...
Add pictures or attach files to email messages in Outlook
To insert a picture that displays in the body of an email message, use the following steps: Position your cursor where you want the image in your message. In the ribbon, select Insert, then Pictures. Browse your computer or online file locations for the picture you want to insert. Select the picture, then select Open.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook on the web, Outlook.com, New Outlook for Windows
取消 Microsoft 订阅 - Microsoft 支持
选择正确的链接以获取有关取消 Microsoft 365、Microsoft Copilot Pro 或 Xbox 订阅的帮助。 对于所有其他订阅,请按照以下 取消其他Microsoft订阅部分中的步骤操作。. 取消 Microsoft 365、 Copilot Pro 或 Xbox 订阅
Applies To: Microsoft account dashboard
Contact Us - Microsoft Support
Select the product you need help with. We'll show you self-help options first. Additional help is available if you need it, including live chat with a Microsoft specialist. Microsoft 365. Office. Windows. Xbox. Surface devices. Copilot.
Microsoft 365 Training
Get going quickly and easily with Microsoft 365 video training. Start now. See how to get started with Copilot for Microsoft 365, your everyday AI companion. Watch Copilot videos. Learn what's possible with Word, Excel, and PowerPoint. Download now. Visit the small business help & learning page to learn how you can use Microsoft 365 in your ...
Use AutoSum to sum numbers - Microsoft Support
To sum a column of numbers, select the cell immediately below the last number in the column. To sum a row of numbers, select the cell immediately to the right. AutoSum is in two locations: Home > AutoSum, and Formulas > AutoSum. Once you create a formula, you can copy it to other cells instead of typing it over and over.
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 for iPad, Excel for iPhone, Excel for Android tablets, Excel for Android phones
Change your background in Microsoft Teams meetings
Change your background during a meeting. In your meeting controls, select More actions > Effects and avatars . Select Blur to blur your background, or choose from the available images to replace it. To upload an image of your own, select Add new and pick a .JPG, .PNG, or .BMP file from your computer. To turn off background effects, select None.
Applies To: Microsoft Teams