To do this
- Stop IIS.
- Go to the data folder for the Web Module that you specified in the Installation wizard (defaults to c:\VantageWebData)
- Open the file 'Vantage Web Module.Settings' in a text editor such as Notepad
- Look for the following line: <entry name="Configured" type="System.Boolean">True</entry> and change it to <entry name="Configured" type="System.Boolean">False</entry>.
- Save the file.
- Restart IIS.
- Refresh the Web Module page and you should see the Configuration Wizard again. This will let you re-enter the authentication mechanism and admin account.