  We generate high-order harmonics at high pulse repetition rates using a
turnkey laser. High-order harmonics at 400 kHz are observed when argon is used
as target gas. In neon we achieve generation of photons with energies exceeding
90 eV ($\sim$13 nm) at 20 kHz. We measure a photon flux of 4.4$\cdot10^{10}$
photons per second per harmonic in argon at 100 kHz. Many experiments employing
high-order harmonics would benefit from higher repetition rates, and the
user-friendly operation opens up for applications of coherent extreme
ultra-violet pulses in new research areas.
