MicroSoft offers the free (!!) XML Notepad dated 2007 that apparently can open .XSD files. I have no idea how well it works for validating .XSD schema, but I can say that I have used it to locate errors in regular .XML files, so there’s that. For free it can’t hurt to try it out.
Bote
From: Colton Conor
Sent: Wednesday, 13 January, 2016 19:10
Subject: Re: [Freeswitch-users] FreeSWITCH 1.8 New Configs
Which XML editors are the best (for Windows)? Which can validate XSD schemas as suggested?