We explore the possibility of attributing the recent discovery of the hard X-ray variable source CXOM82 J095550.2+694047 in M82 to the gravitational magnification by an intervening stellar obeject along the line of sight as microlens .
The duration of the event ( > 84 days ) allows us to set robust constraints on the mass and location of the mircolensing object when combined with the dynamical properties of the Galactic halo , the M82 and typical globular clusters .
Except for the extremely low probablity , the microlensing magnification by MACHO in either the Galactic halo or the M82 halo is able to explain the X-ray variability of CXOM82 J095550.2+694047 .
It is hoped that the lensing hypothesis can be soon tested by the light curve measurement .