Web config transform on microsoft.identityModel - 'http://schemas.microsoft.com/XML-Document-Transform' attribute is not declared
问题 I have got a Web.Release.config that is successfully transforming a connection string. When I add a microsoft.identityModel section I get a warning saying The 'http://schemas.microsoft.com/XML-Document-Transform' attribute is not declared And the transform doesnt work on that section. What am I missing to get the transform to work? Complete Web.Release.config here <?xml version="1.0"?> <configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform"> <connectionStrings> <add