SCCM Adding Primary Site Error Connection to Central Site SQL Database

[Francis Tran]

SCCM setup failed to establish a connection to the SQL Server for the Central Administration Site ...

On the Primary Server :  Test Test-NetConnection C-CAS01.contoso.com -port 1433

On the Central Site Server: Netstat -a | find /I “1433”

Result is good, that mean it is not SQL problem, 

Check if  proxy or FW blockage:

Go to Windows Firewall and turn it off:

Test again  :

Test-NetConnection C-CAS01.contoso.com -port 1433

Now SCCM Setup should be good again!

[GarthMJ]

is there a question?

You do know that you don't need a CAS unless you have 150000 computers.