When trying to copy A users in AD I get error.
WIndows cannot create the object username because: The name reference is invalid.
If I clear the contents for showinAddressBook attribute it will let me copy that user. The data in the field contains data like this: CN=All Users\0ADEL:c11e6e9b-54d4-44de-90a0-a57430c21f18,CN=Deleted Objects,CN=Configuration,DC=Domain,DC=local
Note: We don't have an onsite Exchange server but There was one in the past. I think it is related to that somehow but not sure how to fix it for all users.
Servers are windows 2012 Functional level is 2008.
Thanks in advance