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!.

For technical support, go to Contact Microsoft Support, enter your problem and select Get Help. If you still need help, select Contact Support to be routed to the best support option. Learn how to change Microsoft account email address or phone number using aliases to sign into your Microsoft account.

In the search box on the taskbar, type Photos . From the list, select Photos . Then select the photo you’d like to change. Select Edit image ( Ctrl + E ) at the top of your screen. Select either Crop , Adjustment , Filter , Markup , Retouch , or Background to start editing. Use these features to tweak the light, color, look, and feel of your ...

To view them, right-click the desktop, select View, and then select Show desktop icons. To add icons to your desktop such as This PC, Recycle Bin and more: Select Start , open Settings , then under Personalization , select Themes . Under Themes, scroll down and select Desktop icon settings. Choose the icons you would like to have on your ...

At the top corner of the browser, select Settings and more > Settings . To change appearance, select Appearance and make the changes you want to your default theme, zoom, toolbar, and fonts. To change startup behavior, select On startup, and then select what you want Microsoft Edge to display on startup.

If that doesn't work, or your camera is built in on your device, try this: Select Start , type device manager, then select it from the search results. Find your camera under Cameras, Imaging devices , or Sound, video and game controllers. If you can't find your camera, select the Action menu, then select Scan for hardware changes.

To check for updates, select Start > Settings > Windows Update , then select Check for updates. If updates are available, you can choose to install them. Check for updates. If you run into problems updating your device, including problems with previous major updates, see common fixes at Troubleshoot problems updating Windows.

In new Outlook, open a new message or reply to a message. From Options > Show fields, select Show Bcc. Add the names of people you want on the Bcc line. Note: When you add someone's email address to the Bcc (blind carbon copy) box, a copy of the message is sent to that person. Other people who receive the message don't see whose address is on ...

Recover lost or deleted files. Windows 7. Note: If you've recently updated Windows 10 and are having problems finding files, see Find lost files after the upgrade to Windows 10. If you can't find a file on your computer or you accidently modified or deleted a file, you can restore it from a backup (if you're using Windows backup) or you can try ...

To open the Start menu—which contains all your apps, settings, and files—you can do any of the following: On the center or left end of the taskbar, select the Start icon. Note: Your taskbar settings determine where the taskbar is located. Press the Windows logo key on your keyboard. Swipe up from the bottom center or left of your screen ...