QVSTunnel asks for authentication in a different domain
I've installed and configured Qlikview Server 8.5 in a server and I'm trying to use QVSTunnel because some users don't have TCP 4747 port access.
When I try to make a simple test, like http://www.mydomain.com/scripts/qvstunnel.dll?testtunnel, it appears a window authentication, asking for username and password. I had installed QVServer pointing to localhost and everything was fine. But now, I have to install in another IIS application directory, p.ex. MyDomain, and since then, this message box is appearing.
When I try to access through QVP protocol, like qvp://www.mydomain.com%3Ahttp and select Anonymous, it's shown the following message: Security settings denies access.
I've configured IIS application directory to grant IIS Guest Accout, IQVS, and also Everyone (just for test), but the authentication box is still there. Also, Directory Security tab includes Anonymous access and Windows Integrated Authentication.