How to get Windows 10 to autoload WinUSB as driver using MS_OS_20 BOS descriptor - winusb

Question

I am struggling to get Windows to load the default WinUSB driver for my device. Please note that I am looking for a solution that is using BOS descriptor (and not the old 0xEE string index).
The device enumerates and Windows tells me that it is installing the device, but the WinUSB driver is not loaded. I have tried everything that I can think of, but still I can't get Windows to load the driver. I even uninstall the device and delete the USB flags in the registry whenever I re-try, but to no avail. Is there anyone who can help me to get this to work?
I don't want WebUSB capabilities or anything additional. This is a non-composite device.
This is my BOS descriptor (as sent over USB):
05 0F 21 00 01 1C 10 05 00 DF 60 DD D8 89
45 C7 4C 9C D2 65 9D 9E 64 8A 9F 00 00 03
06 B2 00 01 00
And this my BOS descriptor set:
0A 00 00 00 00 00 03 06 B2 00 08 00 01 00 ..............
00 00 A8 00 08 00 02 00 00 00 A0 00 14 00 ..............
03 00 57 49 4E 55 53 42 00 00 00 00 00 00 ..WINUSB......
00 00 00 00 84 00 04 00 07 00 2A 00 44 00 ..........*.D.
65 00 76 00 69 00 63 00 65 00 49 00 6E 00 e.v.i.c.e.I.n.
74 00 65 00 72 00 66 00 61 00 63 00 65 00 t.e.r.f.a.c.e.
47 00 55 00 49 00 44 00 73 00 00 00 50 00 G.U.I.D.s...P.
7B 00 46 00 37 00 32 00 46 00 45 00 30 00 {.F.7.2.F.E.0.
44 00 34 00 2D 00 43 00 42 00 43 00 42 00 D.4.-.C.B.C.B.
2D 00 34 00 30 00 37 00 44 00 2D 00 38 00 -.4.0.7.D.-.8.
38 00 31 00 34 00 2D 00 39 00 45 00 44 00 8.1.4.-.9.E.D.
36 00 37 00 33 00 44 00 30 00 44 00 44 00 6.7.3.D.0.D.D.
36 00 42 00 7D 00 00 00 00 00 6.B.}.....
The layout is:
typedef struct _SMSOS20DescriptorSet
{
SDeviceDescSetHeader sDescriptorSetHeader;
SConfigurationSubsetHeader sConfSubsetHeader;
SFunctionSubsetHeader sFuncSubsetHeader;
SDeviceCompatibleIdDescriptor sCompIdDescriptor;
SDeviceRegDescDeviceInterfaceGUID sRegistryDescDevInterfaceGuid;
} SMSOS20DescriptorSet;
I have follewed these guides and doc:
https://learn.microsoft.com/en-us/windows-hardware/drivers/usbcon/automatic-installation-of-winusb#winusb-device-installation-by-using-the-in-box-winusbinf
MS_OS_2_0_desc.docx
https://thewindowsupdate.com/2018/10/12/how-to-install-winusb-sys-without-a-custom-inf/
https://learn.microsoft.com/en-us/windows-hardware/drivers/usbcon/winusb-installation#automatic-installation-of--winusb-without-an-inf-file
UPDATE:
when you have a non-composite device that only has a single a configuration, then you are not use any subset headers (neither 'Configuration subset header' nor 'Function subset header'). So, the correct layout in this case is:
typedef struct _SMSOS20DescriptorSet
{
SDeviceDescSetHeader sDescriptorSetHeader;
SDeviceCompatibleIdDescriptor sCompIdDescriptor;
SDeviceRegDescDeviceInterfaceGUID sRegistryDescDevInterfaceGuid;
} SMSOS20DescriptorSet;

Answer 1

UPDATE: when you have a non-composite device that only has a single a configuration, then you are not use any subset headers (neither 'Configuration subset header' nor 'Function subset header'). So, the correct layout in this case is:
typedef struct _SMSOS20DescriptorSet
{
SDeviceDescSetHeader sDescriptorSetHeader;
SDeviceCompatibleIdDescriptor sCompIdDescriptor;
SDeviceRegDescDeviceInterfaceGUID sRegistryDescDevInterfaceGuid;
} SMSOS20DescriptorSet;