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Article ID: 290287 - Last Review: October 26, 2013 - Revision: 5.0

This article was previously published under Q290287
This article has been archived. It is offered "as is" and will no longer be updated.

Summary

This article describes how to manually uninstall and re-install the Exchange Server 5.5 version of Microsoft Outlook Web Access (OWA).

More information

To manually uninstall and re-install OWA:
  1. Stop and disable all third-party services and programs (for example, antivirus or backup software). Stop the World Wide Web Publishing service.
  2. If you use any customized Active Server Pages, back up your Webdata folder, which contains your custom files.
  3. Uninstall OWA:
    1. Insert the Exchange Server 5.5 CD-ROM in the CD-ROM drive, and then locate the Setup.exe file in the following location:
      Server\Setup\I386\Setup.exe
    2. Click Install Exchange 5.5.
    3. Click Add/Remove.
    4. Click to clear the Outlook Web Access check box.

      Warning Only clear the Outlook Web Access Components check box. If this is a mailbox server and if you clear the check boxes for other components, loss of data may result.
    5. Click Yes when you are prompted about whether you want to remove one previously installed component.

      Warning Verify that only one component will be removed, or loss of data may result.
  4. Use the Internet Service Manager in Microsoft Internet Information Server (IIS) version 4.0 or Microsoft Internet Information Services version 5.0 to delete the Exchange virtual directory if it exists. If a virtual directory named Exchange exists, right-click the Exchange virtual directory, and then click Delete.
  5. Remove the exchfilt ISAPI filter from the Web site:
    1. Use the Internet Service Manager to open the properties of the default Web site.
    2. Click the ISAPI filter page, click exchfilt, and then click Remove.
  6. Rename the OWA files:
    1. Locate the Winnt\System32 folder.
    2. If Exchfilt.dll exists, rename it to Exchfilt.old.
    3. Rename the Cdo.dll file to Cdo.old.
    4. Locate the Exchsrvr\Bin folder.
    5. Rename the Cdohtml.dll file to Cdohtml.old.
    6. Locate the Exchsrvr folder.
    7. Rename the Webdata folder to Webdata.old.
    8. Rename the Webtemp folder to Webtemp.old.
  7. Remove the OWA registry values. To do so, you need to edit the registry.

    Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
    322756  (http://support.microsoft.com/kb/322756/ ) How to back up and restore the registry in Windows

    To remove the OWA registry values:
    1. Start Registry Editor (Regedt32.exe).
    2. Locate and click the following key in the registry:
      HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
    3. If the MSExchangeWeb key still exists, delete it.
    4. Locate and click the following key in the registry:
      HKEY_LOCAL_MACHINE\Software\Microsoft\Exchange\Setup
    5. If the Web Connector key still exists, delete it.
    6. Locate and click the following key in the registry:
      HKEY_CLASSES_ROOT\CLSID
    7. If the {bc00f780-31ac-11d0-b5f1-00aa00bf3382} key still exists, delete it.
    8. If the {bc00f781-31ac-11d0-b5f1-00aa00bf3382} key still exists, delete it.
    9. If the {bc00f782-31ac-11d0-b5f1-00aa00bf3382} key still exists, delete it.
    10. Locate and click the following key in the registry:
      HKEY_CLASSES_ROOT\TypeLib
    11. If the {BC00F700-31AC-11D0-B5F1-00AA00BF3382} key still exists, delete it.
    12. Quit Registry Editor.
  8. Remove the Microsoft Transaction Server components (only for Microsoft Windows NT 4.0):
    1. In the IIS management console, locate the Microsoft Transaction Server tree.
    2. Expand the Computers container.
    3. Expand My computer.
    4. Expand Packages installed.
    5. Expand IIS In-Process Applications
    6. Expand Components.
    7. Delete all of the occurrences of IISWAM.1_Root_Exchange.

      NOTE: The IISWAM.1 changes if OWA is under another Web site. The "_Root_Exchange" remains constant.
  9. Stop and restart the IIS Administrator service.
  10. Apply the service pack for your operating system again.
  11. Re-install OWA:
    1. Insert the Exchange Server 5.5 CD-ROM in the CD-ROM drive, and then locate the Setup.exe file in the following location:
      Server\Setup\I386\Setup.exe
    2. Choose a custom installation, and then click to select the Outlook Web Access check box.

      IMPORTANT: Make sure that the Microsoft Exchange Server and Microsoft Exchange Administrator check boxes are selected. If these check boxes are not selected, Exchange Server is removed and the information store is lost.
  12. Apply the Exchange Server 5.5 service pack again.

Applies to
  • Microsoft Exchange Server 5.5 Standard Edition
Keywords: 
kbnosurvey kbarchive kbhowto KB290287
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