WP User permission issues

Question

I have freshly installed WebsitePanel on Active Directory enviorment.

The thing is WP users like WPPortal and WPEnterpriseServer are members of IIS_USER and Domain User groups which as it seems don't have enough rights to run their application pools. So the end result is the app pools are stopped and I get 503 error trying to access Portal. If I add them to admin groups they can run app pools and everything works as it should, so I was wondering is there some other way to make this work than adding these two users to the admin groups?

Edit:

I actually went trough log of installer and I saw an error on the end os installation although that the installer said that everything was installed correctly. This was the error:

ERROR: Authentication error
System.Net.WebException: The request failed with HTTP status 503: Service Unavailable.
   at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
   at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
   at WebsitePanel.EnterpriseServer.esAuthentication.AuthenticateUser(String username, String password, String ip)
   at WebsitePanel.Setup.ES.Connect(String server, String username, String password)

Answer 1

I found the solution I don't know how this happened, but NETWORK SERVICE should be a member of the IIS User group.

Answer 2

I found the solution I don't know how this happened, but NETWORK SERVICE should be a member of the IIS User group.

hi i did as per above but error is still appear!

http://social.msdn.microsoft.com/Forums/en-US/wspsupport/thread/3dde4727-ca60-4f41-adae-cf9f78f00db9