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Changing an administrator's password
Changing an administrator's password requires first getting the CoreUserID for that user, and then updating the password and password salt for that user in the database.
Getting the CoreUserID
Run the following SQL query to get the CoreUserID for the user. Make sure to replace <USERNAME> with the administrator's username. If more than one result are returned, make sure you identify the right entry.
Updating the password and password salt
The following query will update the administrator's password. Make sure to replace <COREUSERID> with the proper CoreUserID identified in the first section. Have updating the password, log in with the account and reset the password to something else.
Check IsLockedOut flag - it must be set to 0 for active/unlocked account.