Database account passwords need rotation after personnel changes, policy deadlines, or suspected exposure. phpMyAdmin can update one existing MySQL or MariaDB credential without renaming the account or changing its assigned database privileges.
The User accounts page is available only to an administrator with permission to manage database accounts. Select the exact username and host pair because guide_operator@% and guide_operator@localhost are separate accounts even when their usernames match.
Cookie authentication makes the old-and-new credential check clear because a fresh browser session asks the database server to authenticate the supplied password. Keep the original administrative session open until the replacement password works so that session remains available if verification fails.




Saving the next step immediately invalidates the old password; the current administrative session remains the recovery path if verification fails.





