Calculate the difference between two dates - Microsoft Support
As you saw above, the DATEDIF function calculates the difference between a start date and an end date. However, instead of typing specific dates, you can also use the TODAY() function inside the formula. When you use the TODAY() function, Excel uses your computer's current date for the date.
Applies To: Excel for Microsoft 365, Excel 2021, Excel 2019, Excel 2016
Windows 10 - Microsoft
2020 年 1 月 14 日 - Windows 10 移动版(操作系统内部版本 15254.603)的更新 KB4535289; 2019 年 12 月 10 日 - KB4530714(操作系统内部版本 16299.1565) 2019 年 12 月 10 日 - Windows 10 移动版(操作系统内部版本 15254.600)的更新 KB4522812
Mouse and Keyboard Center download - Microsoft Support
The Microsoft Mouse and Keyboard Center is an app that helps you make the most out of your Microsoft keyboard and mouse. Mouse and Keyboard Center helps you personalize and customize how you work on your PC.
Device protection in Windows Security - Microsoft Support
Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security.
OneDrive help & learning
Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.
What's new in Office 2021 - Microsoft Support
Immersive Reader advanced color support. In Immersive Reader, we've added many additional ways you can choose a page color.Selecting a page color can make text easy to scan with less eye strain. On the Immersive Reader tab click Page Color to see a 4x5 color picker.. Click More Colors to see additional color selection options such as Wheel, Sliders, Color Palettes, Image Palettes, and Pencils.
Applies To: Office 2021, Office 2021 for Mac
Find your Office product key - Microsoft Support
Learn how to locate your Microsoft Office product key, which allows you to activate and use your Office products without requiring a Microsoft account.
Open the Camera in Windows - Microsoft Support
How to open the Camera app in Windows. 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
Product activation for Windows online & support telephone numbers
To activate Windows 10 using an internet connection: As Windows 10 will automatically activate if you are connected to the internet, you can confirm your activation status by selecting Start > Settings > Update & Security > Activation and looking under Windows.. If online activation fails, first try the activation troubleshooting in Activate Windows 10.
Microsoft Edge help & learning
Get help and support for Microsoft Edge. Find Microsoft Edge support content, how-to articles, tutorials, and more.