how to solve the connection problem with SQL Server - sql-server

Question

I am trying to connect to my SQL Server 2016 Database using pyodbc with django.
In the SQL configuration manager i have all the network configurations as Enabled
shared memory
Named Pipes
TCP/IP
FireWall is turned OFF
I tried using localhost and it worked fine but when I tried to connect to a server on the same network it did not work and displayed the below error:
OperationalError at /connect/
('08001', '[08001] [Microsoft][SQL
Server Native Client 11.0]Named Pipes Provider: Could not open a
connection to SQL Server [53]. (53) (SQLDriverConnect); [08001]
[Microsoft][SQL Server Native Client 11.0]Login timeout expired (0);
[08001] [Microsoft][SQL Server Native Client 11.0]A network-related or
instance-specific error has occurred while establishing a connection
to SQL Server. Server is not found or not accessible. Check if
instance name is correct and if SQL Server is configured to allow
remote connections. For more information see SQL Server Books Online.
(53)')
I tried to check the ODBC Driver on the server and it displays these drivers:
ODBC Driver 13 for SQL Server
SQL Server
SQL Server Native Client 11.0
and I tried both of them but no success.
views.py
from django.shortcuts import render
import pyodbc
# from .models import Artist
# Create your views here.
def connect(request):
conn = pyodbc.connect('Driver={ODBC Driver for SQL Server};'
'Server=AB-INT-SQL;'
'Database=testDB;'
'Trusted_Connection=yes;')
cursor = conn.cursor()
c = cursor.execute('SELECT * FROM Artist')
return render (request,'connect.html',{"c":c})
connect.html
{% for row in c %}
{{ row }}
{% endfor %}

Answer 1

If there is only 1 SQL instance installed on the server, just do quick check with telnet HOSTNAME 1433 to confirm SQL Server accepting the communication on default port number.
if telnet doesn't work, add new rule in fire-wall (via Firewall advanced settings) with port numbers 1433 and 1434 even though have turn-off the firewall. Still doesn't work, restart SQL Service and then have a look at SQL error log for a message (following message must appear after restart time)
Server is listening on [ 'any' ipv4 1433].
Aside from this (once telnet test works), i believe, you need use the driver in connection string as "Driver={SQL Server Native Client 11.0};" which you may have already tried.
Edit: SQL Error log screenshot