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Log into the NPI client application.
Select System Configuration > Settings.
In the General category, select the drop-down next to Default Culture to override the default selection (Use OS settings) and select a different language.
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On the login screen (NPI in the following illustration), select a new default language to use from the Language drop-down in the upper-right corner of the window.
A message displays, prompting you to confirm the new language selection:Select Yes to confirm the new language you selected.
The new language setting you select will take effect when you log in.