Summary
Question
The Windows system locale (Culture and UI Culture) of the user running the Performance Center environment (IUSR_METRO unless changed) must match the localized version of your Performance Center software.
When working with a non-localized version of Performance Center, the locale must be set to English (EN- xx). Since the Performance Center user is created and configured when the machine is added to the LAB project, the system locale needs to be verified after completing all of the configuration steps.
The Windows system locale (Culture and UI Culture) of the user running the Performance Center environment (IUSR_METRO unless changed) must match the localized version of your Performance Center software.
Answer
For details on setting the locale on Windows 2008 R2, refer to the attached Change Locale on Windows 2008R2.
For details on setting the locale on Windows 2012 or 2016, refer to the attached Change Locale on Windows 2012 or 2016.