  Based on the Euclidean approach, we consider the effects of quantum gravity
and mass-less matter on the thermodynamic properties of Schwarzschild black
hole. The techniques of effective field theory are utilized to analytically
construct the partition function at the one-loop level. Using the non-local
heat kernel formalism, the partition function is expressed as a curvature
expansion. We extensively discuss the effect of the corrections on the
thermodynamic stability. The one-loop free energy shows, remarkably, that a
large number of gauge fields is able to render Schwarzschild black hole
thermodynamically stable. The black hole mass at which stability is achieved
scales as $\sqrt{N}$ in Planck units, where $N$ is the number of gauge fields,
and is independent of any UV completion of quantum gravity.
