The standalone binary often depends on missing DLLs (like libiconv2.dll ). If you get an error, download the full ZIP containing all dependencies or switch to Method 1.
This package installs xmllint along with xsltproc (an XSLT processor) and other required utilities like iconv and xmlcatalog . How To Install Xmllint Windows
If the file is valid, the command returns nothing. If invalid, it outputs exact line errors. 3. Validate XML Against a DTD or Schema The standalone binary often depends on missing DLLs