  Arthur packets have been defined for pure real forms of symplectic and
special orthogonal groups following two different approaches. The first
approach, due to Arthur, Moeglin and Renard uses harmonic analysis. The second
approach, due to Adams, Barbasch and Vogan uses microlocal geometry. We prove
that the two approaches produce essentially equivalent Arthur packets. This
extends previous work of the authors and J. Adams for the quasisplit real
forms.
