Click here to read “How to Use SQL Server Configuration Manager to Manage SQL Server Services, Configure Network Protocols, and Network Connectivity Configuration” article from the beginning.
How to Force Protocol Encryption in SQL Server
To configure force protocol encryption, expand SQL Server Network Configuration and then right click Protocols for <INSTANCE> and then select Properties.
To turn on Force Encryption select the option Yes from the drop down list and click OK to save the changes.
In this article you have seen how easily one can configure Network / Client Protocols, can change service accounts or can update service account passwords using SQL Server Configuration Manager.