When you upgrade a Web server running Internet Information Services (IIS) 5.0 and the Microsoft® Windows® 2000 operating system, the World Wide Web Publishing Service (WWW service) is disabled unless, prior to upgrade, you elected to run the IIS Lockdown Tool or you added the entry RetainW3SVCStatus to the registry. However, if neither of those was done, then you need to enable the WWW service after the upgrade.
Credentials: Membership in the Administrators group on the local computer.
Tools: Microsoft Management Console (MMC); Local Security Policy.
As a security best practice, log on to your computer using an account that is not in the Administrators group, and then use the Run as