If you don't, you may find (as I did) that the latest update changes the way that purchased books are downloaded (one receives a tiny data file in their kindle folder as opposed to the full-size azw). Sharers in the know will realize why this is important... Thankfully, the older versions of kindle for pc are still available on filehippo (I can verify that 1.17.0 still works as before).

Thanks, i reinstalled an older version and it works again.

Happy to help!

[pjmpjm]

Very useful tip, dosa!