Windows 64-bit But if you’re running a 64-bit version of Windows (and you probably are), you’ll need a program that can run DOS in a virtual machine inside Windows.

If you don’t know if your PC is running a 32- or 64-bit version of Windows, now is the time to find out. In Windows 7, click Start, right-click Computer, and select Properties.

Microsoft's Program Install and Uninstall Troubleshooter is a Web-based utility that fixes problems associated with the installation or uninstallation process.

To find the version number for the installed Microsoft Defender in Windows 10, please follow these steps: From the Start Menu, search for Windows Security and click on the result when it appears ...