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PKS 1830-211 is a known macrolensed quasar located at a redshift of z=2.5.Its high-energy gamma-ray emission has been detected with the Fermi-LATinstrument and evidence for lensing was obtained by several authors from itshigh-energy data.  Observations of PKS 1830-211 were taken with the H.E.S.S. array of ImagingAtmospheric Cherenkov Telescopes in August 2014, following a flare alert by theFermi- LAT collaboration. The H.E.S.S observations were aimed at detecting agamma-ray flare delayed by 20-27 days from the alert flare, as expected fromobservations at other wavelengths.  More than twelve hours of good quality data were taken with an analysisthreshold of $\sim67$ GeV. The significance of a potential signal is computedas a function of the date as well as the average significance over the wholeperiod. Data are compared to simultaneous observations by Fermi-LAT.  No photon excess or significant signal is detected. An upper limit on PKS1830-211 flux above 67 GeV is computed and compared to the extrapolation of theFermi-LAT flare spectrum.

H.E.S.S. observations of the flaring gravitationally lensed galaxy PKS 1830-211