#E358 An unsigned or incorrectly signed file “c:\windows\inf\usb.inf” for driver “Generic USB Hub” blocked (server install). Assuming all device classes are subject to driver signing policy. #W239 The driver signing class list “C:\WINDOWS\INF\certclas.inf” was missing or invalid. For the benefit of others, the main clue was this error message: Very glad we could get this interesting case solved! This turned out to be a problem unrelated to the product, with XP’s cryptsvc service and its database.
