I tried to sync music from my laptop to my brand new Sony Walkman NWZ-B153 MP3 player, but all I got was a whole load of red crosses down the left side of the track info lines.
When I left clicked on one of the crosses, it said," unable to get the device certificate" whatever that means, plus the error code, C00D11E3.
I had a Sony MP3 player before and I was able to download music o problem. So why the problem with this brand new one??