This page says that the Zune certificate is corrupted every time you change your Windows password. Is this really true?
I only use Zune to upgrade my Lumia 900. I've done it 3 times, and every time I've had to delete the Zune certificate and delete the Crypto/RSA file listed in the second answer on that page before I've been able to connect with Zune. (I have a company PC with forced password changes.)
Doesn't Microsoft consider this a design flaw in Zune?
As Zune's days are strictly numbered since release of Windows Phone 8, I doubt that this issue is likely to attract rectification.