Hello!
Have You NanoVNA-F or NanoVNA-F V2?
1. Driver for NanoVNA/H/H4 - 24 MB download
Unzip, start the file VCP_1.5.0_Setup_W8_x64_64bits.exe - is for W8, it works under W10
2. Program DfuSeDemo 3.0.6 has in the directory bin\driver\win10 driver for 32 and 64 bit Windows 10. Hve You this program?
73 de Vladimir, dl7pga
Vladimir Lebedev