Disable Imap ,pop , sync ,owa for all new users

Hi

Based on the below

https://social.technet.microsoft.com/Forums/en-US/879f1efd-c9ca-40ef-a698-4d7fa106f1be/disable-imap-pop-sync-owa-for-new-users?forum=exchangesvrgeneral

I apply all the steps but some times it working and sometime not

shall I apply all steps on all Mailbox servers and CAS server ?

I applied only on CAS servers .

Please need help on this matter .

MCP MCSA MCSE MCT MCTS CCNA