Retrieve files from the Windows.old folder after a Windows upgrade
In the File Explorer window that opens, under This PC in the navigation bar, select the C: drive. In the results pane, right-click on the Windows.old folder and select Open.
Xbox Support
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Use the System File Checker tool to repair missing or corrupted system ...
When critical Windows system files are missing or corrupted, your operating system may begin to malfunction. Common symptoms include Windows features not working properly, system errors, or Windows becoming unresponsive or freezing.
Fix low disk space errors quickly in Windows - Microsoft Support
Turn on Storage Sense to automatically free up space by removing unnecessary files. Use Cleanup recommendations to identify and delete temporary files, large or unused files, files synced to the cloud, and unused apps. Connect an external storage device like a USB drive or SD card to your PC.
Windows File Recovery - Microsoft Support
Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin. Recovery on cloud storage and network file shares is not supported.
Free up drive space in Windows - Microsoft Support
To fix this problem, you’ll need to reset the Store, clear the Store cache, and run the Windows Update troubleshooter: To clear the Microsoft Store cache, press the Windows Logo Key + R to open the Run dialog box, then type wsreset.exe and select OK.
Fix a corrupted user profile - Microsoft Support
Locate the C:\Users\<Old_Username> folder, where C is the drive that Windows is installed on and Old_Username is the name of the profile you want to copy files from. Select all of the files and folders in this folder, then select the Edit menu and select Copy.
View protected files with Microsoft Purview Information Protection ...
Use the Information Protection viewer to view protected files in Windows, Android, iOS, or Edge.
Error codes in Device Manager in Windows - Microsoft Support
In this article, we will help you find your error code and suggest what you might try to correct the error. Follow the recommended resolutions for that error code. You may also click the specific error code to get more detail information. Note: This article doesn't contain all error codes generated by Device Manager.
Fix problems that block programs from being installed or removed ...
Reset this PC how to reset your PC. If you can’t install, uninstall, or update a desktop program in Windows 10, the Program Install and Uninstall troubleshooter can automatically fix common issues such as corrupted registry keys or incomplete uninstall data.