TACACS not working

Question

Hi Guys
I have added a 2960x switch to my network and configured with tacacs. It does not seems to talk to the tacacs ACS server and I can ping the server as it also authenticates other devices on the network but this new switch only lets me login with local credentials. I have added the switch to ACS aswell
When i tried "test aaa group tacacs username password" Attempting authentication test to server-group tacacs+ using tacacs+
No authoritative response from any server."
My config on the switch is:
aaa group server tacacs+ ACS1
 server 10.10.10.10
aaa authentication login default group ACS1 local
aaa authentication enable default group ACS1 enable
aaa authorization config-commands
aaa authorization exec default group ACS1 if-authenticated
aaa authorization commands 1 default group ACS1 if-authenticated
aaa authorization commands 15 default group ACS1 if-authenticated
aaa accounting update newinfo
aaa accounting commands 1 default start-stop broadcast group ACS1
aaa accounting commands 15 default start-stop broadcast group ACS1
tacacs-server host 10.10.10.10
tacacs-server key 12345678
Thanks

Answer 1

Thanks Reza
After some investigation it seemed the issue is with the tacacs-server host 10.10.10.10 command. I realised upon entering this command the cli accepted it but gave a warning message
"Warning: The cli will be deprecated soon
 'tacacs-server host acs-1 key 0 <my-key>'
 Please move to 'tacacs server <name>' CLI"
Apparently cisco have made a few changes to the config. The tacacs-server ACS1 commands didnt work.
So I entered tacacs-server host 10.10.10.10 key 12345678
That worked.
Thanks