Sql Server Configuration Manager

Configuration

Open SQL Server Configuration Manager  by typing mmc.exe and searching for the path C:\Windows\SysWOW64\SQLServerManager13.msc

The console view appears

Switch to SQL Native Client 11.0-Configuration to the menu item Clientprotokoll, by right-clicking on TCP/IP, call up the properties and check that port 1433 is entered.

Vergrößern

SQL Server-Netzwerkkonfiguration in the menu Item Protokolls for „SQLEXPRESS“ Click on Enabled = Yes in the Properties tab of TCP/IP

Vergrößern

In the IP addresses tab at the bottom of IPAll: Delete TCP Dynamic Ports and enter TCP Port 1433

Put Enabled anywhere on yes, Applay, Ok 

Vergrößern

Restart the server under SQL Server services

Vergrößern

In the Windows services, call the properties of the SQL Server service and choose "Local System Account" from the "Log On" tab

Restart the Server service.