Windows 10 Windows 10 Password Reset Difficulty

Boot in to safe mode (hold shift while clicking the restart option found under the Power icon on the login screen) and see if you can login as the local administrator account.

You should be able to then make a local administrator account that you can use to access your computer when you restart back into normal boot mode. (remember the local administrator account is disabled in normal boot mode that is why I suggest making another account with admin privileges).

Use your new local account to migrate all your documents over, make a NEW Microsoft Account if you wish to do so, then convert your local profile to use a Microsoft Account.

If when you boot in to safe mode you cannot login to the Administrator account because it has a password or you've forgotten it, then you'll want to use something like Lazesoft's Recover My Password to reset it. (don't think this will work on your MSA account you've forgotten the password to though).