I have recently bought Kaspersky Internet Security 2014. Before the installation of Kaspersky, SqlServer 2008 R2 express edition was working without any error. But after it's installation I got error saying:
" A network-related or instance-specific error occurred while establishing a connection to SQL Server. 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)".
Please help me to get out of this. I have checked all the ports, TCP/IP enabled, SqlServer borwser services.