a.¬† Obtain a copy of NDPPNT.DLL from the 4.91 SP1 client. (located in the SYSTEM32 directory)
b.¬† Copy the NDPPNT.DLL from the SP1 client to the SYSTEM32 directory of the workstation running 4.91 SP2.
c.¬† Restart the workstation.
Click Continue Anyway to the Microsoft Driver Signing Warning.
StatusReported to Engineering
1.¬† Prove the Driver Signing Warning doesn't show with 4.91
¬†¬† a.¬† Install the shipping 4.91 SP1 client with custom install.¬† Choose to install the NDPS component.
¬†¬† b.¬† Install an NDPS printer using the Add Printer Wizard.¬† You will not get prompted with the Driver Signing Warning.
2.¬† Remove the installed print driver from the
¬†¬†¬† a.¬† Delete the newly installed NDPS printer.
¬†¬†¬† b.¬† Remove the driver from the OS.
¬†¬†¬†¬†¬†¬†¬† i.¬† Click File -> Server Properties (within Windows Printers window)
¬†¬†¬†¬†¬†¬†¬† ii. Drivers tab -> Remove all the printer drivers on the system
3.¬† Duplicate the error
¬†¬†¬† a.¬† Install SP2 for the 4.91 client
¬†¬†¬† b.¬† Install the same printer, the same way
¬†¬†¬† c.¬† The Driver Signing Warning will be presented.