After installing a major new build, Windows keeps the files necessary to uninstall the new build and revert to your previous one. The catch is that those files are only kept around for about a month. After 10 days, Windows automatically deletes the files,

Finally, click Go back to earlier build. How to Roll Back Windows 10 Update by Rolling Back to a Previous Restore Point. If you created a Windows 10 restore point prior to installing the update you now wish to roll back, this method may be a faster way to

If after installing Windows 10 v 20H2 October 2020 Update, you are facing problems, you can uninstall, rollback & go back to the previous Windows version by uninstalling this latest Feature Update.