Error with SSIS package running as SQL Agent job

Question

I have a strange issue.
I have a SQL Agent job that execute 5 steps, each step is an SSIS package that imports a CSV file to a temp table, then executes a SQL script to update a production table. 
This job runs every 3 mins, every day, and has been for over a year.
Every once in a while it will start failing on step 2.  Sometime it only happens for a couple of runs, other times I have to restart the SQL server.  Once it corrects itself, it could be months before it happens again, but usually happens every
few weeks.
The error in the job history is: "Unable to bulk copy data. You may need to run this package as an administrator"
Obviously I have all the permissions correct, as it was running successfully every 3 mins before this error suddenly starts. I'm at a loss as to what the problem is.  It is always on step 2, which is identical to step 1 except its a different CSV file
going to a different table. As I typed this, it failed twice, then was successful afterwards.
Any ideas where to look for further information? I've checked the event viewer and looked in the SQL logs, nothing stands out at this time.

Answer 1

Hi Kerberos35,
It seems to be caused by the UAC feature which makes SSIS use the low-permissions token of the administrator Windows account under which the job runs. This issue is described in the following KB article:
http://support.microsoft.com/kb/2216489/en-us 
To resolve the issue, you can install the latest service pack for your SQL Server. To work around this issue, you can also use one of the following two methods:
Method 1: Replace the SQL Server Destination components in the Data Flow Tasks that are failing with OLE DB Destination components that point to the same SQL Server connection manager.
Method 2: Create a SQL Server Agent proxy by using a Windows account that is not a member of the local Administrators group after you assign Create Global Objects permissions to that account.
To do this, follow these steps:
Click Start, point to Administrative Tools, and then click Local Security Policy.
Expand Local Policies, and then click User Rights Assignment.
In the details pane, double-click Create global objects.
In the Local Security Policy Setting dialog box, click Add.
In the Select Users or Group dialog box, click the user accounts that you want to add, click Add, and then click OK two times.
Regards,
Mike Yin
TechNet Community Support