How to change or reset your password on Windows 10, for a local or Microsoft account

Windows 10 allows you to change your password or recover it at any time if you forget it.

How to password protect a folder in Windows 10, to keep your files safe from prying eyes

You can password protect a folder in Windows 10 using a program called WinRar, which is free to download and use.
PC World

Forgot your Windows password? Here’s how to get back into your PC

On the first day after your vacation, you sit down at your PC, type in the password — and fail. Windows says: “The password is incorrect. Please repeat the process” and expects you to click “OK.” ...