Unable to login due to forgotten password

If Windows 10 and a Microsoft Account, you can click on Forgot Password.
If earlier than Windows 10 you can try making a bootable USB key from Pogo Stick and use that to reset the password.

https://pogostick.net/~pnh/ntpasswd/

If you are on Windows 10, I wrote a detailed article on how to recover a forgotten Window Password here there should help you out;

https://www.experts-exchange.com/articles/31752/How-to-Reset-a-forgotten-Windows-10-Password.html

I hope that's helpful.

Regards, Andrew

this is the easiest I have found

https://www.tenorshare.com/products/windows-boot-genius.html

Click this link to reset your microsoft password

https://account.live.com/resetpassword.aspx

If you still can't get into your account, please fill out this form:

https://account.live.com/acsr

If your account has been suspended, you may still be able to get back in by filling out this form:

https://www.microsoft.com/en-us/concern/accountreinstatement

Please call this number to verify the ownership of the account.

Answer as many questions as you can. Once you have been verified as the account owner, the password can be reset:

1-800-642-7676