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"Data Execution Prevention" (DEP) in Windows Vista

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Windows VistaTM includes a new feature named "Data Execution Prevention"  (or DEP).

DEP, which is only available on some hardware, is intended to block the execution of some types programs.  This was implemented to thwart  many virus type programs.  Unfortunately, the DEP may also block the execution of valid programs (including some supplied by Microsoft).

If DEP has blocked the execution, you may receive a messages like
"xxxx program has stopped working".  This can be resolved as follows:

1. Go to the Start menu - Contol Panel

2. Click the System & Maintenance function:

3. Click the System function:

4. Click Change Settings
(Note you will need to acknowledge the Account Contol warning)

5. Click the Advanced tab

6. Click the Settings on the Advanced tab

7. Click the Data Execution Prevention tab
(If this tab is not present - then your system computer does not support DEP)

8. The Data Execution Prevention window shows the settings:

9. If the option "Turn on DEP for all programs and services except those I select" is set, then:

A. - set the option to "Turn on DEP for essential Windows programs and services only"

-- or --

B. - Click the Add button and add your program to the list of exceptions.

For example, to add Express Assist 9 to the list, click Add and broswse to locate "c:/program files/EA9/EA9.exe"

10. Restart your machine to complete the changes.



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