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Envy Pro Windows driver has invalid signature

HP Recommended
Envy Pro 6455
Microsoft Windows 10 (64-bit)

I am trying to add an Envy Pro 6455 to one of my Windows 10 Laptops.  When I add the printer it will show a message that the driver is not available.  When I go into Windows Device Manager the message is that the driver is not signed or is not signed in the appropriate manner. I have gone through all of the online suggestions and none have worked. I have installed HP Smart 4 times, HP Envy setup utility and even the HP Support Assistant. None have given me drivers that will work.  My laptop is current with all Windows updates. 


I have other Windows 10 laptops that have had no problem configuring this printer.  Any help in getting this one working?

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