Question

I have SQL Server 2005 installed in my local machine. When I installed it, I was able to connect to the local server which is named “MNTCON016”.
After restarting the machine, I found out that i was not able to connect to the local server “MNTCON016”:

A network related or instance specified error occured while
establishing a connection to SQLServer. The server was not found or
was not accessible. Verify that the instance name is correct and that
SQL Server is configured to allow remote connections. (Provider: Named
Pipes Provider, error: 40- Could not open a connection to SQL
Server)(Microsoft SQL Server, Errorv 2)

After a lot of troubleshooting, I installed the same setup again and named the instance “MNTCON016\SQLEXPRESS”, and then again it allowed me to connect properly.

But when I restart the machine, it gives me the same error as before. On the other hand, it allows me to connect to remote database servers on the network. The only problem is with my local server.

Answer 1

Try to open Start/Programs/Microsoft SQL Server 2005/Configuration Tools/SQL Server Configuration Manager.
Open node SQL Server Network Configuration and click Protocols for MSSQLSERVER. Verify which protocols are enabled. For example, I have named pipes disabled on my machine.
Also open SQL Native Client Configuration and click Client Protocols and check wchich protocols are enabled.

Regards

Piotr