SSIS package not able to connect to XLSX file under SQL Agent Job

Question

I have a very simply package using an Excel connection to an XLSX file.  It's a straight read of the file and import onto a table. 
The package works fine in Visual Studio 2008 development and also runs fine when executing on the (server I copied it to) under Integration Services.    
However, under a SQL Agent, the package (32-bit is checked) can not acquire the connection to an excel file.   I use UNC pathing to the file.  I've read other posts about similar problems and tried various scheduling options (including Owner of
job).   
I even tried a to trigger it with a command-line which did not work: 
"C:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\DTEXEC.exe" /sq "\our packages\My_XLSX_File_Import" /SERVER myserver /X86  /CHECKPOINTING OFF /REPORTING E
All errors are:   "DTS_E_CANNOTACQUIRECONNECTIONFROMCONNECTIONMANAGER.  The AcquireConnection method call to the connection manager "Excel Connection Manager" failed with error code 0xC0209302." 
I can certainly post more, if someone can help.   Sorry, but I am not getting the right help form those posts.   
Please, are there any hints at how I can get the Agent job to work? 

Answer 1

All errors are:   "DTS_E_CANNOTACQUIRECONNECTIONFROMCONNECTIONMANAGER.  The AcquireConnection method call to the connection manager "Excel Connection Manager" failed with error code 0xC0209302." 
I can certainly post more, if someone can help.   Sorry, but I am not getting the right help form those posts.   
Please, are there any hints at how I can get the Agent job to work? 
Ensure that below correct drivers are installed on your target server because I see that file is
.xlsx
Microsoft Access Database Engine 2010 Redistributable
Please refer:
http://microsoft-ssis.blogspot.co.in/2014/02/connecting-to-excel-xlsx-in-ssis.html
Cheers,
Vaibhav Chaudhari
MCP, MCTS, MCSA (SQL Server 2012)