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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.
Fix File Explorer if it won't open or start - Microsoft Support
To open File Explorer in Windows 11, select File Explorer on the taskbar or press the Windows logo key + E on your keyboard. Here are some things to try if File Explorer won't open. Check for updates. Restart your device. Reset your PC.
How to install programs from a disc on Windows 10
If installation doesn't start automatically, browse the disc to find the program setup file, usually called Setup.exe or Install.exe. Open the file to start installation. Insert the disc into your PC, and then follow the instructions on your screen.
Uninstall or remove apps and programs in Windows
Need more help? If you can't find an app or program, try the tips in See all your apps in Windows 10 and Program is not listed in add/remove programs after installation. If you get an error message when you're uninstalling, try the Program Install and Uninstall Troubleshooter.
How to install programs from a disc on Windows 10
Windows 10. If installation doesn't start automatically, browse the disc to find the program setup file, usually called Setup.exe or Install.exe. Open the file to start installation. Insert the disc into your PC, and then follow the instructions on your screen. You might be asked for an admin password.
Description of the Windows File Protection feature
The file version of the system file is x.x:x.x. If WFP cannot automatically find the file in any of these locations, you receive one of the following messages, where file_name is the name of the file that was replaced and product is the Windows product you are using: Windows File Protection.
Add an exclusion to Windows Security - Microsoft Support
Microsoft security help and learning. Find out how to stop Windows Security from alerting you about or blocking a trusted file, file type, or process, by adding it to the exclusions list.
Create installation media for Windows - Microsoft Support
You can use installation media (a USB flash drive or DVD) to install a new copy of Windows, perform a clean installation, or reinstall Windows. To create installation media, go to the software download website, where you'll find step-by-step instructions.
Fix File Explorer if it won't open or start - Microsoft Support
To open File Explorer in Windows 11, select File Explorer on the taskbar or press the Windows logo key + E on your keyboard. Here are some things to try if File Explorer won't open. Check for updates. Restart your device. Reset your PC.
Help in File Explorer - Microsoft Support
How can I share files in File Explorer? Where are my documents in Windows? How does OneDrive work in Windows? How can I see hidden files and folders? Learn how to open and navigate File Explorer in Windows. Get answers to common questions about File Explorer.