Get Microsoft 365 support, help, and learning resources. Organize your life, expand your creativity, and protect what’s important with Microsoft 365.

Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

Make sure your Windows 11 device supports Miracast. To check on your PC, press the Windows logo key + K. If your device doesn't support Miracast, you might see a message saying you need to connect a cable to cast to an external display. Make sure Wi-Fi is turned on.

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.

Internet Explorer will open and you can find out which add-ons were causing issues. To manage add-ons in Internet Explorer, see Manage add-ons in Internet Explorer 11. Learn how to change Internet Explorer settings, or reset browser settings when there's a problem.

Microsoft is retiring the Windows legacy inbox Troubleshooters, such as Keyboard troubleshooter and Speech troubleshooter, and the Microsoft Support Diagnostic Tool (MSDT) that runs them.

You can share your documents for free using Microsoft 365, regardless of whether you or the recipient have a subscription or a Microsoft account. The act of sharing maybe successful, however, the recipient may not be able to open the file because of the Sensitivity label on it.

Here are some best practices for earning Microsoft Rewards points so you can redeem them for gift cards, games, sweepstakes, nonprofit donations, and more.

Create a workbook in Excel. Excel makes it easy to crunch numbers. With Excel, you can streamline data entry with AutoFill. Then, get chart recommendations based on your data, and create them with one click. Or easily spot trends and patterns with data bars, color coding, and icons. Create a workbook. Open Excel.

Caring for your battery in Windows. When battery saver is on, your PC temporarily turns off some things that use a lot of power, like automatic email and calendar syncing, live tile updates, and apps you’re not actively using. Using battery saver is the easiest way to extend battery life.