We're getting intermitent issues with an MVC 4 application. The error is "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: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified)". The issue occurs when attempting to update the SQL Server database. Specifics:
web server is II 7.5 on Windows Server 2008 R2
SQL Server is SQL Server 2012 and is on a different server, also Windows Server 2008 R2
The web server is outside the firewall, SQL Server inside. The port on the firewall is open (if not, we'd never connect)
Any ideas on what to look at here?
Craig Berntson
MCSD, Visual C# MVP
INETA Community Speaker
www.craigberntson.com