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- You have specified the correct details like the DB port number, instance name, etc when making the license request.
- Go to Microsoft SQL Server 2008/2012/2014 from your Start programs menu and point to Configuration Tools and then click on SQL Server Configuration Manager.
- In the SQL Server Configuration Manager select the node SQL Server Network Configuration > Protocols for MSSQLSERVER
- Right-click on the TCP/IP node and select Enable
- Restart the SQL Server (SQLEXPRESS) service (In Control Panel > Adminstrative Tools > Services, right-click on the SQL Server (SQLEXPRESS) service and select Restart)
- Also Turn off the firewall/ check the firewall settings.
- In SQL Server Configuration Manager in the TCP/IP settings, clear the "TCP Dynamic Ports" field in "IP All" section and set the TCP Ports to 1433 for IP/ALL and the other IPs, restart the server again.|
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