What does “Unauthorized zone” mean when browsing xsd files with Visual Studio 2010?

Question

When I open up an xsd file that includes other xsd files, all of the included files are added to a section called \"Unauthorized zone\". Visual Studio highlights the x

Answer 1

For me it worked after going to the properties of the XSD file and clicking on Unblock. i got this answer from How do I modify my settings to allow VS2010 to load 3rd party XSD files from the "Unauthorized Zone"?