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.

Symptoms. Internal SATA devices (HDDs or SSDs) may show as removable media in your task bar. Cause. Whether or not a device is considered removable is determined by your system’s BIOS and how it marks the various SATA ports on the motherboard.

Symptoms. After you install a program on your computer, the program is not listed in the Add/Remove Programs tool in Control Panel. Also, other programs that are installed on your computer and that were previously listed in Add/Remove Programs may no longer be listed. Cause.

Cause. This issue occurs when all the following conditions are all true: You have a removable drive, such as an Iomega Zip drive, configured as drive letter C. You do not have a removable disk in the removable disk drive. Resolution. To resolve the issue, use one of the following methods:

If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.

The Microsoft Defender Offline scan will automatically detect and remove or quarantine malware. Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

To resolve this issue, use the following methods. Check for software updates. Improvements are continuously being added to Windows 10 and Office 2016 applications. If you are experiencing a specific issue, first check whether it has been resolved in the latest Windows release or cumulative update.

Microsoft is aware of new variants of the class of attack known as speculative execution side-channel vulnerabilities. The variants are named L1 Terminal Fault (L1TF) and Microarchitectural Data Sampling (MDS). An attacker who can successfully exploit L1TF or MDS may be able to read privileged data across trust boundaries.

Each release of the tool helps detect and remove current, prevalent malicious software. This malicious software includes viruses, worms, and Trojan horses. Microsoft uses several metrics to determine the prevalence of a malicious software family and the damage that can be associated with it.

Secure Boot is an important security feature designed to prevent malicious software from loading when your PC starts up (boots). Most modern PCs are capable of Secure Boot, but in some instances, there may be settings that cause the PC to appear to not be capable of Secure Boot.