That's done on accounts.microsoft.com.
https://support.microsoft.com/en-us/help/4026838/microsoft-account-to-change-your-microsoft-account-password tells the details.
I need to reset my Microsoft's account password from last 2 days in windows 10. But it does not work and continuously showing error message i.e. password is incorrect. Please help me to resolve this error asap.
Thanks in advance