I have two sql server installed in my machine. The 2016 one shows SQL Server(MSSQLSERVER) name and 2014 one SQLEXPRESS respectively.
When I log in from sql server management studio using this hostname\SQLEXPRESS I get loggged into 2014 instance
but when I try to access 2016 version using this hostname\MSSQLSERVER It gives me below error:
a network-related or instance-specific error 26.The server was not found or was not accessible.
In sevice.msc i can see both SQLEXPRESS and MSSQLSERVER up and running.