  Extrasolar planets found by gravitational microlensing often require
assumptions on the source star distance and relative proper motion. Only in a
few cases has it been possible to confirm these findings with space-based
observations or high-resolution follow-up. 20 planetary microlensing events can
be positionally cross-matched with the second Gaia data release containing
parallax and proper motion measurements. In this work we subject all
microlensing planets listed in NASA's Exoplanet Archive to an initial
consistency check by comparing them with Gaia data release 2 measurements. The
resulting list is supposed to serve as a reference for the observers in the
microlensing community. Gravitational microlensing can constrain the physical
parameters lens mass and lens distance based on fit parameters, such as the
event timescale, the microlensing parallax, and the source star crossing time.
If some of these parameters are not available, one needs to resort to indirect
means of assessing the events, often involving a Galactic model. In this work,
we seek to make an initial assessment of those parameters solely based on Gaia
DR2. We find that 19 of 20 planetary events are consistent within $2\,\sigma$
of their published lens and source distances, whereas 9 of them agree with
their published source magnitude within $0.2\,\mathrm{mag}$. The only event
that does not seem to be compatible with the reported distance, is
well-constrained and provides plausible distance estimates.
