one reason for the UAC to fail to add the Authorization in the second REGISTER is because it's not able to respond to the authentication challenge (for example, the realm in challenge doesn't match the one set on the phone).
bogdan
Alex wrote:
so if the 2-nd register has to have Authorization header , how i can fix it so it will have it, because if i change the client to use different server it's working fine. If there any thing i can do on the server side to fix it ??
Thanks for any help.