Andrea,I assume you are seeing this on clients in the AD domain other than the one of the CA that issued the ACS's certficate?That being the case, you need to export out the Root CA cert from your ACS servers domain and import that to the Trusted Roo...

I assume from the screenshots you're using the XP native .1x supplicantHave you defined the Trusted Root Certification Authorities on the client devices interface? The client needs to know which CAs to trust when validating the server certficateNote...

Hi Karthik,The SSL handshake will fail in our experience for any of the following reasons: - The supplicant cannot access the private key corresponding to it's certificate - check that the system a/c has pemissions over the private key found in c:\do...

Have you assigned the AAA server to the NDG CiscoWorks?

The doc says that BUT We have it happily running with the ACS service account as a member of "domain users" only, membership of the local admins group on the ACS server(s) and additional user rights granted via GPO - "log on as a service", "log on as...