  The EROS microlensing survey has monitored nearly 100 million stars for seven
years, to search for halo brown dwarfs and compact objects in the Galactic
disk. In this paper, we review the various EROS observation programs and the
corresponding microlensing search results. In particular, based on LMC and SMC
observations, EROS excludes a major contribution from compact objects with
masses in the range 2. x 10^{-7} - 1 M_{\odot} to the Galactic halo. Less than
25% of the standard halo mass can be made of such objects, while the EROS
measured optical depths toward the Galactic spiral arms (< tau_{SA} > \simeq
0.43 x 10^{-6}) and Galactic bulge (< tau_{GC} > \simeq 0.93 x 10^{-6}) are
compatible with Galactic model predictions if the contribution from an
elongated bar in the centre is taken into account.
