When using the Sharing tab of the Printer Properties dialog in an Active Directory domain, the following error is displayed below the List in the Directory check box:

The Directory operation is still in progress.

This is symptomatic of a DNS problem. Either the DNS server IP address on this computer's TCP/IP properties is incorrect or the DNS server is mis-configured.

NOTE: The DNS server IP address must point to the DNS server that has the DNS zone for the Active Directory.

NOTE: See How do I setup the Domain Name System for Active Directory?.

NOTE: See SRV Records Missing After Implementing Active Directory and DNS.

NOTE: See How to Verify the Creation of SRV Records for a Domain Controller.

NOTE: See DNS Namespace Planning.