New
#1
Uninstall and delete the driver for both SB Z devices, restart, then try to install the old one.
Did you uninstall the SB software then RESTART THE PC, and then install? If you don't restart and try to install the same problem can still be there.
Here is the downloads from Creative for Win10. Have you downloaded the latest (or available) drivers?
Creative Worldwide Support
i had a while and rolled back to Win 17093.rs and Creative Control panel works flawless
17093.rs is the Windows insider advanced version. The advanced versions "can" cause devices to work or not work correctly. I have the latest insider version but I'm using Realtek audio and its working without problems (as is my recording studio software).
There is a feedback hub to report problems/issues. I would report this to the Microsoft insiders.
I have the Insider but its dual boot with my Win 10 "Production" system. They are on separate SSD's. If you have a dual boot, does the SoundBlaster install OK on the regular (not Insider) version?