So, this is how you can use Notepad++ to validate XML documents against XSD by installing a simple plugin from its Plugins Admin. Now read: How to compare two files in Notepad++; ...

In this method, we will be installing the XML Tools plugin through Plugin Manager. By default, there is no option available to format/indent the XML code but you can modify it by using this plugin.

As the following screenshot of Notepad++ Plugin Manager shows, the minor version is different (1.5 installed, 1.6 is the new version), but the build number (0.54) is the same. By any chance, ... Npp ...

How to automatically install plugins on Notepad++? Open the Plugins Menu > Plugin Manager > Show Plugin Manager : The list of available plugins will be displayed.

The most straightforward way to set Notepad++ as the default editor for .xml files in Windows 10 is to right-click the file > choose Open With > Select Choose another app and check the Always use ...