Microsoft KB Archive/185383

= How to Remove IIS 4.0 and Reinstall IIS 3.0 =

PSS ID Number: 185383

Article Last Modified on 6/23/2005

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The information in this article applies to:


 * Microsoft Internet Information Server 3.0
 * Microsoft Internet Information Server 4.0

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This article was previously published under Q185383



We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:

http://www.microsoft.com/technet/security/prodtech/IIS.mspx



SUMMARY
CAUTION: Virtual directories and virtual servers are not be preserved when Internet Information Server (IIS) is removed.

To remove Internet Information Server (IIS) 4.0 and reinstall IIS 3.0, perform the following steps:


 * 1) Uninstall Microsoft Proxy Server version 2.0, if it is installed on the computer.
 * 2) Uninstall the Windows NT 4.0 Option Pack (to do this, run Setup and select Remove All).
 * 3) Install IIS 2.0 from the Windows NT Server 4.0 CD.
 * 4) Use the Windows NT Server 4.0 Service Pack 3 Update.exe utility to remove all Service Pack 3 files and restore the original files from the Service Pack 3 Uninstall directory.


 * 1) Reapply Windows NT Server 4.0 Service Pack 3. This should upgrade IIS to version 3.0.
 * 2) Using Windows NT Server 4.0 Service Pack 3, install Active Server Pages (ASP), Index Server, and Proxy Server.



MORE INFORMATION
For additional information about installing Internet Information Server 2.0 and 3.0 on Windows NT Server 4.0, see the following article in the Microsoft Knowledge Base:

184309 : How to Install IIS Without Rerunning Windows NT Setup

Additional query words: revert return un-install undo re-install uninstall sp sp3 akz

Keywords: kbhowto KB185383

Technology: kbiis300 kbiis400 kbiisSearch

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