http://www.epo.org/service-support/updates/2016/20161031.html
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The EPO is
pleased to inform users of
Online Fee Payment that a new update will be rolled
out for 1 November 2016. The estimated downtime will be from 18.00
to 19.00 hrs (CET) on
31 October 2016.

Users of the
Multipay Tool software who have activated the Live Update function will be
notified automatically when the update for this tool is available.