Disable change photo - Outlook 2013

Hi,

I made the change as below

1. Set OWA policy to disable photo change.

Get-OWAMailboxPolicy | set-owamailboxpolicy -setphotoenabled:$false 

2. Apply policy to all user.

Get-CASMailbox -ResultSize Unlimited | Set-CASMailbox -OWAMailboxPolicy Default

I can see the change option in OWA has been disabled but it is still showing up on Outlook 2013 and it allows user to change the picture.

Any suggestions?