Application reload task error "Error: ErrorSource: Microsoft OLE DB Provider for SQL Server, ErrorMsg: [DBNETLIB][ConnectionWrite (send()).]General network error. Check your network documentation"

The problem is most likely related to Network communication. Please ensure that the database Server can be reached from the node which is reloading the application.
1. Please check if there is windows firewall is up and running on both server(Database/Qlikview/sense Node). Try stopping the firewall profiles and see if that makes any difference.
2. Please check If there is any network or port block due to network permission or any AV program is running on the server or database server as well.
3. Try generation another string. We generated "Server ODBC native client 11.0" connection and that worked for us.
4.Please use Qlikview desktop application for reload first and then try reloading from QMC.
5. You can also check other documents/URLs online for more understanding in order to resolve these kind of issues.