With the latest changes to licensing, it seems that once our license has only 15 days left, a pop-up window appears warning of this, even when running in batch mode (no graphics).
There is no way to disable this warning window. Since we run approximately 4000 tests on multiple machines, this means that those machines ground to a halt and cannot complete testing. The tests are all run in batch mode, no interaction from a person, so there is no way to dismiss the pop-up window.
Ticket C13980004 was open to address this issue, however I was told there just isn't any way to solve this currently and I should submit an enhancement. To me this is more of a bug - you are basically taking away 15 days worth of license use.