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The XML plugin is installed properly in the plugins subdir and the 3 DLLs are copied to the Notepad EXE subdirectory.

Other XML "validation" features work but there is no way to validate against an XSD. Basically it says that you have to install the XML Tools plugin, then open the XML to be validated in Notepad , and click on the menu option Plugins Validate now.

If you use backward slash, it gives schema parsing error but forward slash works fine.

XML document that also conforms to the rules of a schema that defines the legal elements of an XML document.

Using the exact XML & XSD from this example worked and i realized what i was doing wrong.

I didn't realize that the was actually reading the XSD from my hard drive from the same subdir as the XML file and validating. Just an FYI, if you use nested schemas and refer other schema using relative path such as foo\abc.xsd, make sure that you use forward slash(/) instead of backward slash (\) when validating in NPP Xml Tools plugin.

The XSD schema files that are used to validate the file in a solution are available at .