I am trying to connect a new Win7 Ultimate pc to a mixed AD & Kerberos realm. I found the message for Network Security change for Kerberos Authentication and now I am able to login but all I get is the Welcome screen and the spinning circle. Does anyone have any ideas on what I should try next?

Firstly you may realize the Kerberos authentication information of the realm. In Windows 7 the following encryptions are supported. AES256-CTS-HMAC-SHA1-96AES128-CTS-HMAC-SHA1-96RC4-HMACDES-CBC-MD5DES-CBC-CRC However the two DES encryptions are disabled by default. If the AD & Kerberos realm uses one of the encryptions, you need to configure the policies to enable them. The policy is Windows Settings\Security Settings\Local Policies\Security Options\Network Security: Configure encryption types allowed for KerberosArthur Xie - MSFT

Authur, I already did this because I found I could not login(bad user name or password) now I can login but all I get is the Welcome screen and the spinning circle

Did you ever find the solution for this problem, because I am facing a problem like this and can not find a solution for it yet