Just to clarify for those having issues with DEP, which I understand is not the case with some of you:
DEP is a useful security measure, and I wouldn't suggest disabling it entirely. If you're encountering is a DEP issue with elicense (often indicated by a successful install that simply won't start up), then you want to set OOTP -and- elicense as exceptions. You'll notice there's no program called elicense.exe on your PC, so here's what you do:
- right-click on "Computer" and select "Properties"
- Select "Advanced system settings"
- The tab should already be on Advanced, but if not then select that.
- Under "Performance", click on <Settings>
- On the next screen, select the "Data Execution Prevention" tab.
- Choose "Turn on DEP for all programs and services except those I select."
- Down at the bottom, select <Add...>
- Navigate to your OOTP folder and pick that .exe file
- Back under your DEP tab, select <Add...> again
- Navigate to your C: drive and your Windows folder. In there, you'll find a program called runservice.exe - that's the one for elicense, so pick that.
- Click <Apply> and then <OK> down at the bottom, and restart your PC.
Following those instructions will stop DEP ever bothering your OOTP game ever again. I hope that helps a bit for someone out there.