=RAND()*(b-a)+a. If you want to use RAND to generate a random number but don't want the numbers to change every time the cell is calculated, you can enter =RAND() in the formula bar, and then press F9 to change the formula to a random number. The formula will calculate and leave you with just a value.

Note: If your version is newer than those listed below, it’s because there may be a delay between when versions start rolling out and when they are updated on this page.

You select Optimize for video quality for Battery options in the Video playback settings. Because playing HDR video uses more battery power, if you select Optimize for battery life for Battery options, you won’t get HDR video when your device is running on battery.To change this, select Start , then search for settings.Select Settings > Apps > Video playback .

When it comes to optimizing your Windows device, one of the key optimization areas is the startup process. The applications that run automatically when your device boots up can impact both the speed of your startup and the overall performance of your system.

Edit photos and videos. Whether you like to apply changes that affect your photo's quality, feel, and look—or you want to add information on top of your photos, the Photos app offers you comprehensive features to transform your photos and videos looking their best.

Forward all messages to another account in new Outlook. Messages that are forwarded will appear to be forwarded from you. When someone replies to a message that has been forwarded, the reply will be sent to the address the message was forwarded from, not to the original sender.

The Calculator app for Windows is a touch-friendly version of the desktop calculator in previous versions of Windows. You can open multiple calculators at the same time in resizable windows on the desktop and switch between Standard, Scientific, Graphing, Programmer, Date calculation, and Converter modes.. To get started, select the Start button, and then select Calculator in the list of apps.

Microsoft account help and support. Get help with signing in, locked or compromised accounts, linked accounts, closing, reopening, and updating your security info and account profile.

Why some files won't open in Internet Explorer. Internet Explorer uses add-ons such as Adobe Reader to view some files in the browser. If a file that needs an add-on won't open, you might have an older version of the add-on, which needs to be updated.

Windows 11 updates provide the latest features and security improvements to help keep your PC more current and more secure. Before the installation process starts, Windows checks to make sure there’s enough storage space on your device for the installation process and for these new features and security improvements.