Learn how to find which version of Windows operating system your PC is running and device specifications.

The Microsoft Support and Recovery Assistant works by running tests to figure out what's wrong and offers the best solution for the identified problem. It can currently fix Office, Microsoft 365, or Outlook problems. If the Support and Recovery Assistant can't fix a problem for you, it will suggest next steps and help you get in touch with Microsoft support.

Download and install apps As you're getting your Microsoft 365 business subscription set up, you'll want to download and install your Microsoft 365 apps, like Word, Excel, Microsoft Teams, and PowerPoint, on your PC or Mac.

Learn different ways to locate your BitLocker recovery key in Windows, and learn about how BitLocker might have been activated on your system.

If you want to use Windows Security, uninstall all of your other antivirus programs and Windows Security will automatically turn on. You may be asked to restart your device.

Enable virtualization on Windows 11 PCs Virtualization lets your PC emulate a different operating system, like Android™ or Linux. Enabling virtualization gives you access to a larger library of apps to use and install on your PC. If you upgraded from Windows 10 to Windows 11 on your PC, these steps will help you enable virtualization.

Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender. Download Microsoft Defender on your devices either by:

Refunds are typically issued for requests meeting the following criteria: Requests are made within 14 days of the purchase date. Requests are for games in which you haven’t accumulated a significant amount of play time. Note As a limited exception, digital game products may be eligible for a refund within 30 days if you’re unsatisfied with ...

Update Surface devices and Windows. Download the latest drivers and firmware updates to keep your Surface devices performing their best.

Install Office 2007. Insert your Office 2007 CD into the drive. If the setup wizard doesn’t start automatically, navigate to the CD drive and click SETUP.EXE. When prompted, enter the product key. You can find the product key on the sticker on the CD case or other packaging. If you need help, see Find your Product Key for Office 2007.