through powershell i had hide DL and confirm from EMC but still shows in GAL???Support@Mytechnet.me

Hi, Have you tested whether you can see the DL from OWA or Outlook in Online mode? If you are viewing the gal from an Outlook client running in cached mode you must wait for a new offline address book to be generated and then download this to the client. Leif

Hi, Hidden DL cannot be resolved from Outlook or OWA, also they will not show-up under the GAL, OAB. So if you check dl from OAB(outlook cache mode), then please try to restart the Exchange File distribution services from CAS server to let it download the newest OAB from mailbox server. Also you can try to run update-offlineaddressbook to update the OAB. Xiu Zhang TechNet Community Support