Hi, same problem … lost my Audigy 2 Platinum on the 1909 update. Lost it in Windows 7 and lost it twice now in Windows 10. I heaved on this problem for two days including Daniel K's support pack. The PCI input device records the event "requires further installation" which is a generic message that actually means "out of luck dude". The card was and still is a darling but the breakout box is integral with a musical instrument. I hope someone finds another alternative.
If you talk about third party programs you must retain each and every third party setup program archived somewhere safe so you can retrieve it and reinstall if it somehow has been removed by windows reinstall. Windows 10 typically removes third party programs that will then need to be reinstalled by the administrator or owner of the machine harboring windows 10. You also typically need a key as provided by the third party retail outlet.