Repeat instance of Data Execution Prevention (DEP)

Hello David,

Data Execution Prevention (DEP) events are usually caused by a corrupted or incompatible add-on. Try using Internet Explorer (No add-ons) to see if you can identify a specific add-on that is causing the DEP events from occurring:

·        Click Start

·        Click All Programs

·        Click Accessories

·        Click System Tools

·        Click Internet Explorer (No add-ons)

·        Click Tools

·        Click Manage Add-ons

·        Click Toolbars and Extensions

·        Under Show: click All add-ons

·        Click any add-on

·        Press CTRL + A on your keyboard (this should select all add-ons)

·        Click Disable all

·        Click Close

·        Close Internet Explorer (No add-ons)

·        Open Internet Explorer

 
Now all add-ons are disabled in Internet Explorer, test to see if the same problem occurs without add-ons. If the problem is fixed then the next step is to enable the add-ons one by one to find which is causing the problem. (an alternative method is provided below these instructions)

·        Click Tools

·        Click Manage Add-ons

·        Click Toolbars and Extensions

·        Under Show: click All add-ons

·        Click the first disabled add-on

·        Click Enable

·        Click Close

·        Surf a few pages

·        Close Internet Explorer

·        Open Internet Explorer

 
If Internet Explorer still opens/works correctly, the add-on you enabled is good to stay. Repeat the enabling process for the next disabled add-on and continue this process until the problem returns. Then the last enabled add-on will need to be disabled/uninstalled/updated to avoid further problems.
 
Alternative method:
Instead of enabling add-ons one at a time, you could enable the first half of the add-ons and then test. If the problem is still gone, the add-ons you enabled are good to stay. Then enable half of the remaining disabled add-on and so on until the problem returns. Once the problem returns, you will need to test the last group of add-ons you enabled one by one.

 
Look forward to hearing back from you.

https://answers.microsoft.com/en-us/ie/forum/ie8-windows_other/windows-data-execution-prevention-keeps-popping-up/909332c4-c3b0-4008-b026-752d6705f183?auth=1

Thanks
Gowrish