Configuration :: Getting Error Connecting To Database After Upgrading To .net 4.0?

Aug 22, 2010

I upgraded a Website to use ASP.NET 4.0, from 3.5. This involved setting it up on a different server, with the same hosting company. I'm using a shared hosting plan on Windows Server 2008.

Since migrating, it gives an error message when I try to login to the site:

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)

I'm using the same connection string as I did in the old version, which always worked. I also changed the permissions for the database to allow connections from the redeployed Website, via the host's control panel.

I have searched the web.config, and the source for the site, and I haven't been able to find a connection string that looks incorrect.

I've contacted the host about it, in case it is a configuration issue on their side.

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