I\'m on a Japanese system and when I run MsBuild.exe to build a Visual Studio project, I get a mix of Japanese and English in the output:
C:\\path\\to\\solut
I was facing similar problem on machine WIN 8.1. It was installed in Czech and later English language pack was added. Result was that MsBuild started from console was in Czech language. I found in Region setting option Change system locale.. was in Czech. After switching to English output was in English.
Update for Windows 10