Exchange 2013 cu10
we have a policy of disabling mailboxes for users who have left the company. recently, i've been having issues disabling mailboxes so for the moment i'm hiding them from the address book.
the error message i'm receiving when disabling a mailbox is:
Active Directory operation failed on DC01.ACME.COM. This error is not retriable. Additional information: The parameter is incorrect. Active directory response: 00000057: LdapErr: DSID-0C090B91, comment: Error in attribute conversion operation, data 0, v1db1
tried to google for it but gives me unrelated results.
appreciate any help to fix this so that i can start disabling mailboxes again.