A SOAP fault code that represents an invalid namespace for a SOAP envelope was found during the processing of the SOAP message.
public static readonly XmlQualifiedName VersionMismatchFaultCode
A SOAP envelope is the top-level element of an XML document that represents a SOAP message.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.