1. Change the Administrator password in Olation.

2. Log in to PowerOLAP as Administrator - Administrator

3. Change Administrator password to new one (Go to Model tab->Change Password)

4. Log out of PowerOLAP and log back in using new Administartor Password.

5. Change the Olation Configuration Password of each cube (Model tab-> Cube->Properties)

6. Go to PowerOLAP schedular and update Password (Edit task-> enter new password) for each cube.