Learn how to enable virtualization through the UEFI (or BIOS) of your PC to run the Windows Subsystem for Android or Windows Subsystem for Linux.

Fixes an issue in which the Virtual Disk Service or the applications that uses the service crash or freeze in Windows Server 2012.

Here's how to do that on Windows, Mac, or Android.

Use the System File Checker tool to repair missing or corrupted system files. When critical Windows system files are missing or corrupted, some Windows features may stop working correctly or Windows may stop responding altogether.

Be sure you're connected to the Internet and then open any application, such as Word or Excel. In most cases, the Office or Microsoft 365 apps are activated once you start an application and after you click Accept to agree to the Microsoft Software License terms.

Learn how to use Manage and Optimize Drives to keep your disk and data drives defragmented and at top performance in Windows.

There are various reasons why a CD or DVD drive is not detected. The resolutions that are listed in this article may help solve some instances but not all instances of this problem. You may also need to contact your hardware manufacturer for assistance with your hardware.

This drive contains the Microsoft 365 installation files. Double-click the virtual drive to open it. If you don't see the new drive, locate the image file you downloaded and double-click it again. The new drive should appear in your directory.

Follow these steps to reinstall Windows using the recovery media: Start your device from the USB drive that was created with Recovery Drive. The process to boot from a USB drive may vary by manufacturer, so refer to your device's manual if needed.

Describes Windows Virtual PC for Windows 7 and provides the download link.