Index: archiva-modules/archiva-web/archiva-webdav/src/main/java/org/apache/maven/archiva/webdav/ArchivaDavSessionProvider.java
===================================================================
--- archiva-modules/archiva-web/archiva-webdav/src/main/java/org/apache/maven/archiva/webdav/ArchivaDavSessionProvider.java	(revision 649448)
+++ archiva-modules/archiva-web/archiva-webdav/src/main/java/org/apache/maven/archiva/webdav/ArchivaDavSessionProvider.java	(working copy)
@@ -77,12 +77,11 @@
         // Authentication Tests.
         try
         {
-            AuthenticationResult result = httpAuth.getAuthenticationResult(request, null);
+            AuthenticationResult result = httpAuth.getAuthenticationResult( request, null );
 
-            if ( result == null || !result.isAuthenticated() )
+            if ( result != null && !result.isAuthenticated() )
             {
-                //Unfortunatly, the DavSessionProvider does not pass in the response
-                httpAuth.authenticate(request, null);
+                throw new UnauthorizedDavException(repositoryId, "User Credentials Invalid");
             }
         }
         catch ( AuthenticationException e )
@@ -130,7 +129,7 @@
                         ",permission=" + permission + ",repo=" + repositoryId + "] : " +
                         authzResult.getException().getMessage() );
                 }
-                throw new DavException(HttpServletResponse.SC_UNAUTHORIZED, "Access denied for repository " + repositoryId);
+                throw new UnauthorizedDavException(repositoryId, "Access denied for repository " + repositoryId);
             }
         }
         catch ( AuthorizationException e )
Index: archiva-modules/archiva-web/archiva-webapp/src/main/java/org/apache/maven/archiva/web/repository/RepositoryServlet.java
===================================================================
--- archiva-modules/archiva-web/archiva-webapp/src/main/java/org/apache/maven/archiva/web/repository/RepositoryServlet.java	(revision 649448)
+++ archiva-modules/archiva-web/archiva-webapp/src/main/java/org/apache/maven/archiva/web/repository/RepositoryServlet.java	(working copy)
@@ -121,7 +121,9 @@
         }
         catch (DavException e) {
             if (e.getErrorCode() == HttpServletResponse.SC_UNAUTHORIZED) {
-                log.error("Should throw UnauthorizedDavException");
+                final String msg = "Should throw " + UnauthorizedDavException.class.getName();
+                log.error(msg);
+                webdavResponse.sendError(e.getErrorCode(), msg);
             } else {
                 webdavResponse.sendError(e);
             }