1) Would not work on a Win 7 64 bit Home Premium computer, failed with multiple download errors (Unexpected or Unknown error/ try again) downloading the Harmony app and attempting to install without downloading the harmony app; 2) Would not work on a Win 7 32 bit Ultimate computer, failed with the same multiple download errors downloading the Harmony app and attempting to install without downloading the harmony app; 3) Finally installed on a Win 8.1 computer, retrieved my info from previous Harmony One (or did I, can't confirm this, none of the supposedly retrieved settings are ones I have used in several years) yet failed to retrieve settings for watching TV or Bluray, e.g

Two receivers (e.g., Watch TV) or Bluray activities (Sony Bluray) (which of course are the primary activities for which I purchased remote).For $250 after 2 hours with basically no progress to me that is worse than useless, I have wasted precious family time without any satisfaction for which I purchased remote, I seek products that work as advertised without unsolvable complications (e.g., unexpected error, unknown error, no tech support available, no Google threads regarding error messages, implicit solution: buy/try another computer).

FWIW the Win8.1 computer is not my favorite, but I purchased it a year after Win 8 was released in order to attempt to keep up with the times, and this is the second occasion it has come in handy; i.e., when my daughter had to do violin tests for public middle school orchestra, the Smart Music app failed with an incomprehensible error, same problem with only daytime M-F tech support, and no searchable threads to explore any solutions.

Two receivers (e.g., Watch TV) or Bluray activities (Sony Bluray) (which of course are the primary activities for which I purchased remote).For $250 after 2 hours with basically no progress to me that is worse than useless, I have wasted precious family time without any satisfaction for which I purchased remote, I seek products that work as advertised without unsolvable complications (e.g., unexpected error, unknown error, no tech support available, no Google threads regarding error messages, implicit solution: buy/try another computer).

Please...please Logitech - see the horrific error of your ways and bring back the layout of the original 'One'.

after all these years they were still there, but it is a very good thing i had not forgotten that 7 year old, defunct e-mail address