If you receive this error message or encounter difficulties when attempting to launch Pro Tools using Windows Vista disabling DEP may solve the problem.

This option disables "Data Execution Prevention", a feature of Windows that can sometimes cause errors. This won’t harm anything, but also isn’t always necessary.

How to Disable DEP:

1. Click "Start"
2. Click "All Programs"
3. Click "Accessories"
4. Right Click on "Command Prompt"
5. Left click on "Run as Administrator"
6. Click the Allow button if it asks you for permission
7. Type or copy and paste this into the command prompt window:

bcdedit.exe /set {current} nx AlwaysOff


8. Hit enter and you should see the confirmation: Operation Completed Successfully
9. Reboot and DEP should be off.

If you would like to re-enable DEP enter the following into the command prompt window:
bcdedit.exe /set {current} nx AlwaysOn

Hit enter and you should see the confirmation: Operation Completed Successfully. After restarting the computer, DEP will be re-enabled.