We are looking to use the Windows Desktop Application Program with our application. When I have used this in the past, there had been some requirements for the code signing certificate used. As I recall, it had to be from VeriSign. I don't remember if it had to be an extended validation certificate, or if a vanilla certificate worked. In the meantime, VeriSign sold its certificate products to Symantec. Before plunking down the cost for the certificate, we prefer to get one known to work with the Desktop Application Program. Can anyone tell me what the current requirements are?