By default, SQL Server Express 2005 does not enable remote connections via TCP/IP. This needs to be configured using SQL Server Configuration Manager. TCP/IP needs to be enabled and at least one port defined.
The following error appears in the browser when you attempt to connect in this scenario: This page contains the following errors: error on line 109 at column 72: EntityRef: expecting ';' Below is a rendering of the page up to the first error.
Connect attempt failed: WSE839: An HTTP response was received that used the following content type: text/xml:charset=utf-8. The following content type was expected: multipart/related; type=application/xop+xml.