Some background:
- I am running SQL Server 2012
- Let's call the service account running SQL Server Agent: myserv-sa-sqlagent
- Right now I have it set up so that I CAN: 1) log onto the server as myserv-sa-sqlagent, and 2) connect to the SSIS server via SSMS, and 3) SUCCESSFULLY RUN the package, let's call it myssispack.dtsx from Stored Packages -> MSDB -> [Folder] => myssispack.dtsx
In short then, if I wanted to log into the server as the service account (myserv-sa-sqlagent) and manually right click on each package in the SSIS server and "Run Package" -- I could successfully do that.
I cannot though call the package from SQL Server Agent job via a SSIS Package type step. Temporarily, I have made myserv-sa-sqlagent an administrator on the server.
Error message when trying to run the package from SQL Server Agent:
Connecting to the Integration Services service on the computer "[my server]" failed with the following error: "Access is denied." By default, only administrators have access to the Integration Services service. On Windows Vista and later, the process must be running with administrative privileges in order to connect to the Integration Services service. See the help topic for information on how to configure access to the service.