Use the System File Checker tool to repair missing or corrupted system ...
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. To do this, follow these steps: Open an elevated command prompt.
Uninstall or remove apps and programs in Windows - Microsoft Support
There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.
KB5007040: Out of Box Experience update for Windows 11: October 4, 2021
This update improves the Windows 11 out-of-box experience (OOBE) by providing critical fixes for Windows Hello enrollment and the cumulative update experience. This update applies only to the Windows 11 OOBE process and is available only when OOBE updates are installed. Windows OOBE.
Security update for the Windows Search remote code execution ...
Resolves a vulnerability in Windows that could allow an attacker to take control of the affected system.
Windows 10 device starts on the Welcome Screen and as "Other user"
When you turn on a new Windows 10 device for the first time, the device may start on the Welcome Screen, which displays Other user, instead of starting in the Out of Box Experience (OOBE). In this situation, you cannot log on to the device or use Windows. This issue occurs because a critical Windows process (dwm.exe) fails to start.
Request a refund for digital games | Xbox Support
Find out how to submit a request for a refund for a purchase of digital Xbox content.
Remove specific prevalent malware with Windows Malicious Software ...
Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see Covered malware families). For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.
Remove malware from your Windows PC - Microsoft Support
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.
Applies To: OneDrive (home or personal), OneDrive for Windows
Make older apps or programs compatible with Windows
Runs the program using settings from an earlier version of Windows. Try this setting if you know the program is designed for (or worked with) a specific version of Windows. Uses a limited set of colors in the program. Some older programs are designed to use fewer colors.
Fix problems that block programs from being installed or removed
First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open. The troubleshooter provides steps for you to follow. If a program isn't listed in the uninstall options, you'll be asked for that program's product code.