Can someone please confirm this is still broken in Exchange 2016 CU20? Apparently admins don't have permissions to execute the CmdLet "Clear-TextMessagingAccount" for users that have already enabled this feature? I am getting some strange error, see below...
Error text.
The operation couldn't be performed because object 'contoso.com/Users/User Name' couldn't be found on 'DC01.contoso.com'
Looks like someone else has run into this too with no resolution....
https://social.technet.microsoft.com/Forums/exchange/en-US/41f04408-19a2-477a-b9b4-68bef6d9fc20/cleartextmessagingaccount-for-admins?forum=exchange2010
Regards,
Adam Tyler