There is a second, even more obscure "exclusive" driver issue: The RNDIS Network Driver.
When you plug a PlayBook in, it tries to create a network bridge to share the tablet's internet connection with the PC. Windows 10 almost always misidentifies this as a generic remote NDIS device and flags it with a Code 31 error. blackberry playbook drivers for windows 10 exclusive
The fix requires diving into Device Manager, selecting the failing device, and manually browsing the legacy driver list to force it to use the BlackBerry Device Manager driver. It is a manual handshake that modern operating systems have forgotten how to perform. There is a second, even more obscure "exclusive"
If Windows shows “Driver not signed,” restart with driver signature enforcement disabled (Shift + Restart → Troubleshoot → Startup Settings → Disable driver signature enforcement). If Windows shows “Driver not signed,” restart with