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How to Restore DEP to its Default state?


Code5yndicate

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Data Execution Prevention (DEP) is a system-level memory protection feature that is built into the operating system starting with Windows XP and Windows Server 2003. DEP enables the system to mark one or more pages of memory as non-executable. Marking memory regions as non-executable means that code cannot be run from that region of memory, which makes it harder for the exploitation of buffer overruns.

Set DEP Back To Default Behavior
To set DEP behavior back to default and make it manageable again via system settings, do the following.

Open the Command window as Administrator.
Enter the command bcdedit.exe /set {current} nx OptIn.

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Restart the computer.
Now the radio buttons in the DEP tab in systems settings are accessible again.

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