Dears, We are facing a strange situation. We had Windows NT and exchange 5.5 and upgraded windows to Windows 2000, added exchange 2000 in our organization and made ADC then transferred all users from 5.5 to 2000. We tried to remove 5.5 servers and there ADC but we failed. We used the manual steps from Microsoft support site. But unfortunately the global address book started to display duplicate users' entries with the same SMTP email address in the global address list. When searching the active directory users and computers we found two entries in the entire domain search. By clicking on the first entry the properties of the user appears, but the second entry is displaying error message "object not found and close MMC (Microsoft Management Console) We tried to remove the entries by LDAP but the same error returned. Please help. ----------------------------------------- This E-Mail is confidential. It may also be legally privileged. If you are not the addressee you may not copy, forward, disclose or use any part of it. If you have received this message in error, please delete it and all copies from your system and notify the sender immediately by return E-mail. Internet communications cannot be guaranteed to be timely secure, error or virus-free. The sender does not accept liability for any errors or omissions.