I have resolved my problem. Thank you for all your suggestions. Oliver's suggestion of removing my dnnuser from having a windows account and making the user only be an SQL login solved the problem. I am curious how I would make a windows user able to work, but for now at least my installation succeeded. Thanks again for all the help and helpful suggestions.

Deb

You can use Windows authentication easily. I wouldn't create a seperate local user on your machine unless you just want too, but DNN will run under either <machine name>\ASPNET or <machine name>\NETWORK SERVICE depending on your OS which already exists on your machine.

So...here are (my) step by step instructions for you to get your DNN 4.0.2 install running using Windows Authentication. This is assuming you have IIS, .NET framework 2.0, and SQL 2005 Express installed.

Create the C:\DotNetNuke directory

Apply the following permissions to the C:\DotNetNuke folder
Full Control to <machine name>\ASPNET
-OR-
Full Control to <machine name>\NETWORK SERVICE
Full Control to SYSTEM
Full Control to <machine name>\Administrators
Read & Execute to <machine name>\Users
Some of these permissions may not be necessary or can be reduced but this is what worked (easy) for me

Extract DotNetNuke_4.0.2_Install.zip to C:\DotNetNuke

Create a virtual directory named DotNetNuke in IIS

Change the default document to Default.aspx on the Documents tab of the DotNetNuke virtual directory

Change the ASP.NET version to 2.0.50727 on the ASP.NET tab of the DotNetNuke virtual directory

Create <machine name>\ASPNET OR <machine name>\NETWORK SERVICE Login (Security>Logins) in SQL 2005 Express

Create DotNetNuke database with <machine name>\ASPNET OR <machine name>\NETWORK SERVICE as owner in the C:\DotNetNuke\App_Data directory

After database has been created, expand DotNetNuke>Security>Users and double click dbo
Under Owned Schemas check db_owner

Replace permissions on the C:\DotNetNuke folder

Rename the release.config file to release.config.bak

Copy the release.config.bak file as web.config

Open the web.config file and modify the following lines

<connectionStrings>
    <!-- Connection String for SQL Server 2005 Express -->
    <add name="SiteSqlServer" connectionString="Data Source=.\<your sql server instance name>;Initial Catalog=DotNetNuke;Integrated Security=True;"/>

<appSettings>
     <!-- Connection String for SQL Server 2005 Express - kept for backwards compatability - legacy modules   -->
     <add key="SiteSqlServer" value="Data Source=.\<your sql server instance name>;Initial Catalog=DotNetNuke;Integrated Security=True;"/>

Navigate to http://localhost/DotNetNuke

By default it says ".\SQLExpress" Change that to ".\<sql server instance name>" where <sql server instance name> is your SQL server instance name.