You most likely have encountered this error when attempting to play a flash game. Macromedia projector is a stand-alone player for flash files, and is not included as part of the latest Adobe Flash updates your computer receives. Learn how to get your application working again.
Verify the application you are attempting to run is trustworthy, and you have downloaded and/or installed it from a valid source.
Click the "Start" button, right-click on "Computer," then select "Properties" from the list.
Click "System protection." Click the "Advanced" tab and select the "Settings" button in the performance section. Click the "Data Execution Prevention" tab.
There should be two selections, and "Turn on DEP for all programs and services except those I select" should be selected. Click the "Add" button and navigate to the folder that your game/application is installed (usually found in the program files folder). Click on the ".exe" file in the folder that launches the application.
Run your application.
Follow these steps only if you trust the program you are granting permission for. If you have virus protection, run a scan of the file first.