Go back to the previous version of Windows - Microsoft Support
Rolling back to a previous version can help you regain stability and functionality while you wait for updates or fixes to be released. The option to go back to your previous version of Windows is only available for a limited time after upgrading. In most cases, you have 10 days to go back.
System Restore - Microsoft Support
With System Restore you can revert your PC's state to a previous point in time. This can be particularly useful when troubleshooting issues caused by recent changes, such as software installations, driver updates, or system settings modifications.
Recovery options in Windows - Microsoft Support
Yes, you can roll back to a previous version of Windows if you encounter issues after upgrading. This option is available within 10 days after upgrading to a new version of Windows.
Reset your PC - Microsoft Support
Learn about the different reset options in Windows and how to reset your device.
Backup, restore, and recovery in Windows - Microsoft Support
Learn about the different tools to backup and restore your data, and to recover Windows in case of a system failure.
Windows recovery environment - Microsoft Support
System Restore: Allows you to revert your PC's state to a previous point in time, undoing recent system changes without affecting personal files. To learn more, see System Restore. Note: If you’ve encrypted your device, you’ll need the BitLocker recovery key to use certain tools.
List of security program cleanup and uninstall tools
Provides links to the uninstall tools and directions for many security programs.
How to perform a clean boot in Windows - Microsoft Support
To return your computer to a normal startup, follow the steps in the section, Reset the computer to start normally after clean boot troubleshooting. If the installation or uninstallation still fails, that means this issue is not caused by interference from a service or an app.
Repair apps and programs in Windows - Microsoft Support
This article explains how to repair apps and programs in Windows 11 and use Settings to fix common app issues without reinstalling. You can repair some apps and programs if they're not running correctly. Note that you won't see repair, change, or modify options for all apps and programs. Repair options from the Settings page.
Uninstall or remove apps and programs in Windows
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.