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Important This article contains information about how to edit the metabase. Before you edit the metabase, verify that you have a backup copy that you can restore if a problem occurs. For information about how to do this, see the "Configuration Backup/Restore" Help topic in Microsoft Management Console (MMC).
When you log on to your mailbox by using Microsoft Outlook Web Access, you may experience one or more of the following symptoms:
This issue may occur after you have used a workaround that is documented in the frequently asked questions (FAQ) section of Microsoft Security Bulletin MS01-023. In this case, you may have selected an option that overrides the application mappings of the Exchange virtual directory, the Public virtual directory, and the Exadmin virtual directory with the application mappings of the Default Web Site. This behavior removes the application mappings for Davex.dll on back-end servers and on stand-alone servers and removes the application mappings for Exprox.dll on front-end servers.
To resolve this issue, use one of the following methods.
Method 1Restart the Microsoft Exchange System Attendant. This causes the directory service-to-metabase (DS2MB) process to replicate the appropriate Active Directory information to the metabase, including the application mappings for Davex.dll and Exprox.dll.
Note When you restart the System Attendant, the configuration settings of the Exchange-related virtual directories in the Internet Services Manager are overwritten with the configuration settings that are configured in Exchange System Manager.
Method 2If the issue still occurs after you restart the System Attendant, use MetaEdit to delete the DS2MB subkey from the metabase, and then restart the System Attendant. This action re-creates the DS2MB key. When the DS2MB subkey is re-created, the correct mappings for the Exchange virtual directories are also re-created.
For more information about how to install MetaEdit on Microsoft Windows NT Server 4.0, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/301386/ )How to install MetaEdit 2.2 on Windows NT 4.0 or Windows 2000
Edit the metabaseTo edit the metabase, follow these steps.
Warning If you edit the metabase incorrectly, you can cause serious problems that may require that you reinstall any product that uses the metabase. Microsoft cannot guarantee that problems that result if you incorrectly edit the metabase can be solved. Edit the metabase at your own risk.
Note Always back up the metabase before you edit it.
Restart the administrative servicesTo restart the administrative services, follow these steps:
Method 3If this issue still occurs after you manually delete the DS2MB subkey from the metabase , manually delete the Exchange virtual directory, the Public virtual directory, and the Exadmin virtual directory in Internet Services Manager, and then restart the Microsoft Exchange System Attendant.
For additional information about how to delete the Exchange virtual directories, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/289869/ )FTP type directory is displayed when you log on to OWA
To view Microsoft Security Bulletin MS01-023, visit the following Microsoft Web site:
http://www.microsoft.com/technet/security/bulletin/ms01-023.mspxThe frequently asked questions (FAQ) section of this security bulletin contains the following question:
I don’t want to install the patch. Is there any other way to protect my web server?The best way to protect your Web server is to install the update. However, if you cannot install the update for some reason, you can help protect your server by disabling Internet Printing.
For more information about how to disable Internet Printing, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/windowsserver/2000/bb735395.aspxTo disable Internet Printing, follow these steps:
(http://support.microsoft.com/kb/309508/ )IIS Lockdown and URLscan configurations in an Exchange environment
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