Upgrading the Server to IIS 6.0

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Applies To: Windows Server 2003, Windows Server 2003 with SP1

The upgrade process from IIS 4.0 or IIS 5.0 to IIS 6.0 completes with minimal interaction because the majority of the IIS 4.0 or IIS 5.0 settings are retained. After the upgrade is complete, the Web sites and applications typically function as they did before the upgrade.

The upgrade process runs a number of compatibility tests before actually performing the upgrade. The compatibility tests relate directly to IIS 6.0 and determine the following:

  • Whether system volume for the server is formatted with the NTFS file system

  • Whether the IIS Lockdown Tool has been run on the server

  • Whether the existing server is currently a node in a Microsoft server cluster

A dialog in the Windows Server 2003 upgrade notifies you if any potential compatibility issues exist. After reviewing the potential compatibility issues, you can abort the upgrade process and resolve the compatibility issues, or you can continue the process. None of the compatibility issues prevent the upgrade process from completing.