Hi Thomas! I did both of them: 1) I exported the cert file with private key. 2) I imported this cert on ISA Server by using MMC (Local Computer). You've written "most common reasons". Are there other reasons why I cannot select certificates on BRIDING tab? If yes, what? Related to your new book (ISA Server 2004) Thomas: Isn't your book published yet? I offered this book on amazon.de 4 weeks ago, but they haven't sent it until now.. Best Regards Mustafa