Thank you for your post.
Based on my research, this problem is most likely caused by the following
1. The Transmission Control Protocol/Internet Protocol (TCP/IP) stack
is initialized incorrectly.
2. The following registry key is not installed:
If this is the issue, please save the attached ClientProtocol.re_ file to
the hard disk, rename it to ClientProtocol.reg and double-click it to
import it into the Registry.
To recreate the TCP/IP stack, please try the method in the following
Knowledge Base (KB) articles:
Q255843 XCLN: Unable to Log on Exchange Server from Windows 2000 Client
Q268575 OL2000: (CW) Err Msg: The Microsoft Exchange Address Book was...
Note: It also apply to Outlook 2002
Create a new profile
If the problem remains, it may be due to a corrupted profile. Let's try to
add a new profile in Outlook 2002. When starting Outlook using this new
profile, all folders will be empty. We will import the original data from
the old .pst file later.
1. Close all the programs and click Start --> Control Panel.
2. Click "Switch to Classic View" if the current view is organized by
3. Double-click the Mail icon and click "Show Profiles ?.
4. Click Add? type a specific name for this new profile and click OK.
5. Follow the wizard to configure the Exchange Server e-mail account
in this profile and click Finish.
6. Go back to the Mail dialog box, click to select "Prompt for a
profile to be used" and click OK.
7. Start Outlook and prompt to choose the newly created profile. Does
the problem cease?
Please let me know if this addresses your concern, or if you would like
further assistance. I am looking forward to your reply.
Online Support Professional