OMA requires that the Regional Settings are the same on your client and server machines. The regional settings can be applied for the user account. At the same time, NAV Service Instance can be run by a service account which doesn’t have any regional settings specified. In that case, this account will use “default” regional settings on the server.
These “default” settings are also applied for new user accounts. Sometimes (especially in European countries) it is required to synchronize the regional settings between your current and “default” accounts. You can do so by using the Copy settings… feature.
Please see below:
Please be aware that you will need to restart your server after applying these changes.