Dunno about W10. Tried it for a short while and binned it. Total shit for diag stuff. Half the time defender interferes and screws USB comms and u cant switch it off. Try flashing an ecu when defender decides it wants to update half way thu and see what happens.
W7 x86 or XP (or W7 x64 if u specifically need it) with no AV best for any diag sw especially with opcom 139 145 154. If W7 theres a few bits to disable like UAC, defender, notifications, USB power mode etc. etc.
Dunno about yr problem tho. Is it just on that car? Have u measured voltage on obd socket and scoped data lines? (pins 6 and 14). If signals there then try another interface. They are cheap enough.
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