Hi, thank you for reaching out.
It looks like the error is 0x80042190. This tells us that the server responded with an HTTP 400 Bad Request.
0x190 is decimal 400.
// The range [0x2000, 0x2400) is reserved for certain network stack errors
// when the server returns an HTTP result code that is not a success code.
// The size of the range is 1024, which is enough to map all the HTTP result
// codes.
#define GOOPDATE_E_NETWORK_FIRST \
MAKE_HRESULT(SEVERITY_ERROR, FACILITY_ITF, 0x2000)
Something is wrong with the request, it may be malformed in some way. You could enable logging, or you could try capturing
the network traffic and dump the Omaha request. We might be able to say what is wrong by inspecting the request.