The template you want to delete is active - it is currently in use in the NPS console and Templates Management locations ...

The template you want to delete is active - it is currently in use in the NPS console and Templates Management locations shown below.  If you delete the template, NPS console configuration settings will be preserved without the template. Templates Management settings will not be preserved. In addition, if you delete this template and then export this server's templates for import on other NPS servers, the template will also be deleted from the remote NPS servers. Do you want to delete the template or cancel deletion of the template?