When I start my MVC application and try to sumbit a form with an empty field than validation is fired and the following message appears (german):
Das Feld "Telefon" ist erforderlich.
If i do the same on my bosses computer, the message is
The Telefon field is required.
I checked if out windows settings for region and language are different, but they are the same? What else could be the reason?
EDIT
Solution is to install ‘Microsoft .NET Framework 4 Extended DEU Language Pack’ (or your perferred language) and to add the culture information in Views/web.config in the <system.web>-Part:
<globalization culture="de-DE" uiCulture="de-DE"/>
On your computer you probably installed the German localized version of the .NET Framework so all error messages are coming from the localized satellite assemblies. Phil Haack blogged about localizing validation messages.