I configured successfully SSL on Microsoft SQL Server 2012 Express Edition for the purpose of encrypting external network connections to the database that are made through Internet. For performance reasons for internal clients on the network I do not want to force the use of SSL and leave to the clients the option of use it or not. I set Force Encryption to No with the following steps: Sql Server Configuration Manager Sql Server Network Configuration Protocols for (MYSQLSERVERNAME) Right click: Properties Flags tab. When I try to establish an encrypted connection with Microsoft Sql Server Management Studio checking Encrypt connection option on Options > Connection Properties I get the following error. A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider, error: 0 - The target principal name is incorrect.) (Microsoft SQL Server, Error: -2146893022) What is striking is that if I select
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