You already perform a full backup of Windows regularly, so can install earlier versions in an emergency anyway.

It’s been more than 10 days since you’ve installed the current version, so the option to ‘go back to the previous version’ in Settings is no longer available.

However, to make sure there are no unintended consequences, meeting the following criteria is also recommended:

It’ll have no effect on either your current Windows 10 experience or any future updates.

Provided you have no intention of ever going back to the previous version, it’s totally safe to remove the Windows.old folder. Should you delete the Windows.old folder? But is it safe to delete, and how should you go about it? Here’s everything you need to know. Windows.old can take up many gigabytes of system storage, particularly if you’ve moved to a brand-new version of Windows. Microsoft blocks the usual right-click or drag and drop methods, presumably to stop people from removing it accidentally. This can be found in File Explorer, but you can’t delete it like any regular folder. This includes data on all your installed programs and settings, stored within a folder known simply as ‘Windows.old’. Every time you switch to a new version of Windows – be it one of Windows 10’s feature updates or a whole new OS – Microsoft keeps a record of the previous version.

How to delete s on windows 10