i finally received a Server to store my DB.
I opened my DB in the server, from there everything is working.

The problem is when i’m trying add a Data Connections to Visual Studio from another computer and i’m getting this error:

Login Failed. The Login is from an untrusted domain and cannot be used with Integrated authentication

The DB in my server configured to “Windows Authentication”

The server name i put is: ip_of_the_serverinstance DB

i tried to use SQL Server Authentication also and i’m getting this error:

Login failed for user ....

I already open the port 1433 and 1434 in the Firewall in the Server. UDP and TCP

TCP/IP is enabled
SQL Server Browser is running
Allow SQL Server and Windows Authentication mode

Nothing is working

Thank you for your help