WSS 3.0 (from 2.0 upgrade) Authentication Issue

Ok, so this drove me bonkers. I’m not loving the workaround (basic authentication) but I’m happy enough, as I have an SSL cert protecting the site anyways, thus auth is secured.

But even after blowing away the web application and site collection, creating a new web application and restoring the site collection from backup, this problem would just reappear (errors below):

You are not authorized to view this page

You do not have permission to view this directory or page using the credentials that you supplied because your Web browser is sending a WWW-Authenticate header field that the Web server is not configured to accept.

HTTP Error 401.2 – Unauthorized: Access is denied due to server configuration.
Internet Information Services (IIS)

For me, what worked was this…

This was the article that got me thinking about the problem:

And then I did this…

Configure Basic authentication (I disabled NTLM/Integrated, to get mine to work) on the Web application from SharePoint 3.0 Central Administration.

  1. Click Start, Administrative Tools, and then double-click SharePoint Central Administration.
  2. Click the Application Management tab, and then click Authentication Providers.
  3. In the Web Application list, select the Web application that you have to update.
  4. Click the Zone that you want.
  5. On the Edit Authentication page for the IIS Authentication Settings, Integrated Windows authentication, click Basic authentication (and uncheck or try/alternate with Integrated Windows Authentication turned off).
  6. To apply the change, click Save.