After the neoCatalog Server windows installation and completing the completed the Configuration Wizard setup with the URL http://localhost/cgi-bin/WebObjects/neoCatalogWeb.woa/wa/configWizard, then opening http://localhost/ I see one Proxy error instead the login page.
Most probably the properties file is not fully created and became corrupted. Follow the steps below:
1. Go to C:\Library\WebObjects\Applications and rename the file neoCatalogWeb.properties to a different file name or remove it from the folder.
2. Restart all services:
3. Open one web browser and call http://localhost/. You should be on the login page to log in with the user you have created in the Configuration Wizard.