SQL Server Express cannot connect error: 28 - Server doesn't support requested protocol

Question

I cannot connect to my local SQL Server Express (2012, but the version shouldn\'t matter) from my server (Windows 2008 R2) to use a tool on it (APEX SQL Data Diff if you are

Answer 1

SQL Configuration Manager:

The picture has the wrong group selected on the link panel: it should be SQL Server Network Configuration → Protocols for SQLEXPRESS.