>I was wondering about the way CryptoStream works to encrypt the data. We are facing a weird situation in production that occurs in a very specific scenario. While I am investigating on this, I would like to know if there is some kind of relationship with the date and time when that component is encrypting some data. Or, is this not related at all?

Michel,

I think that it's not related to the date time at all, but I could be mistaken. Are you creating your own encryption key or creating one via .NET?