OLE DB or ADC error: [outsource.error] An error happened while reading data from the provider

MaxDegreeOfParallelism - degree of parallelism, that is the number of processors employed to run a single statement, for each query that has a parallel execution plan. There should be a server wide setting, however in some scenarios this might work as an overwrite.

MultiSubnetFailover- Is useful if you have an SQL Server Always On Availability cluseter. Here is what MSDN has to say about this option in the connection string:

"Always specify MultiSubnetFailover=True when connecting to a SQL Server 2012 availability group listener or SQL Server 2012 Failover Cluster Instance. MultiSubnetFailover enables faster failover for all Availability Groups and or Failover Cluster Instance in SQL Server 2012 and will significantly reduce failover time for single and multi-subnet AlwaysOn topologies. During a multi-subnet failover, the client will attempt connections in parallel. During a subnet failover, will aggressively retry the TCP connection."