Following tutorial will guide you to reset the MS SQL server SA user password. We count on that you have SA user password.
Log in to MS-SQL server by using current SA password through the MS SQL management studio.
In left hand side of >> Object Explorer, Click on >> Security >>Logins >> SA
Right click on >> SA and click on >> Properties. It will open-up display screen for update password.
Change password and press >> OK button.
That’s it !