Scheduled task to move file into encrypted folder

Hi,

I'm having a issue that needed some help. I've created a batch file to copy file from one location of network (unencrypred files) to another (encrypred), so files downloaded can be encrypted once moved. The batch works fine when running with service account logged in, but when run as a scheduled task I'll get "Access is denied"

I'm using robocopy to move the file, with the following switches:/E /W:5 /R:5 /MT:100 /mov and scheduled task has "Run whether user is logged on or not" selected.

Any help/suggestion will be greatful.

Tim