>What I believe is that your code is running but faces a bug probably because of the authorization to execute the task. So, it stops processing. I believe your timer is well setted up. I would trace the code to see until which line it gets executed.

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Michael,
Very astute! I was just taking a break and had this revelation. I am guessing that when using a System Account the file is not found on the network (because no network access) and therefore the processing method is not run.

But, like you said, there must be some kind of bug that pops up when running as a service and it therefore trys to interact with the desktop and just hangs.

Thanks for your help!

George