You’ll need to go to the Properties page of the Configuration Container in the Exchange Administrator program and then go to the Service Account Password page and change it there and then you’ll need to Windows NT User Manager and change the password there. You wont need to change all the passwords on the services in the Control Panel as the Configuration Container change will change the services for you.
(a) Using the Microsoft Exchange Admin program, select the appropriate Exchange Site, highlight the Configuration container, choose File and Properties and choose the Service Account Password tab.
(b) Type in the new password in the Password and Confirm Password boxes.
(c) A dialog box will appear, indicating that the password also needs to be changed in the Windows NT User Manager.
The following steps needs to be performed on each Exchange Server in the Site
(Although the manual procedure described below will work, I suggest using a cmd file to shut down all services)
Click on Start/Settings/Control Panel and launch the Services applet.
Stop all Exchange Services:
* Microsoft Exchange Directory
* Microsoft Exchange Event Service
* Microsoft Exchange Information Store
* Microsoft Exchange Message Transfer Agent
* Microsoft Exchange System Attendant
* Microsoft Exchange Internet Mail Service
Once all of these tasks have been completed, then change the Msxservice password using the User Manager for Domains applet.