cygfido2-1.dll (from libfido2-1.9.0-1) depends on cygcbor-0.8.dll . But the dependency is dropped in setup.ini (depends2 field). In addition, the current libcbor-0.9.0-2 doesn’t provide cygcbor-0.8.dll but cygcbor-0.9.dll . Maybe, libfido2 needs to be rebuilt with libcbor-0.9 . Thanks, — ggl329