Go to the website and log in to your dashboard. Select the Applications tab, then select Manage to the right of Microsoft Exchange.
When the control panel opens, go to Users and Services and select Manage Users under the Manage Users section.
Now, select the Exchange tab and click on the user whose password needs to be changed.
Select Reset Password.
Next, create a new password that meets the complexity requirements and select Reset Password. If the password reset was successful, you will see a bar below that says Password reset was successful this is how you can Change Microsoft Exchange Password.