IIS: How to disable Data Execution Prevention in Windows Server 2008?

Asked 30/7, 2009 at 20:12 Answered 6/12, 2011 at 14:23

Solved windows iis windows-server-2008 dep

I've been trying to disable DEP on my windows 2008 dev box and have not succeeded.

I've tried: System Properties->Performance Options->Data Execution Prevention->Turn on DEP for essential Windows programs and services only

(still happens)

System Properties->Performance Options->Data Execution Prevention->Turn on DEP for all programs and services except those I select

in this case, i tried to choose both inetinfo.exe and w3wp.exe in the c:\windows\system32\inetsrv\ folder, and when selected, I receive this error:

"You can not set DEP attributes on 64-bit executables".

I'm sure that there is some memory leak somewhere - but that is a separate problem. I'm happy to live with it for a while in my development environment (in fact that is where I need to let it go so I can see it)

Any help would be appreciated!

Thx, Doug

Confiscable answered 30/7, 2009 at 20:12 Comment(3)

What does (still happens) mean? What are you observing? What do you expect? – Transferase 30/7, 2009 at 20:21

Running a system without DEP on is like driving without wearing a seatbelt...Why would you want to? – Valvate 30/7, 2009 at 20:21

Probably better on server fault? – Compartment 30/7, 2009 at 21:46

The GUI does not show the 4 modes of DEP operation.

You need to do it at boot time:Boot Parameters to Configure DEP and PAE

However, more info on the error message:

System DEP configuration settings apply only for 32-bit applications and processes when running on 32-bit or 64-bit versions of Windows. On 64-bit versions of Windows, if hardware-enforced DEP is available it is always applied to 64-bit processes and kernel memory spaces and there are no system configuration settings to disable it.

Compartment answered 30/7, 2009 at 20:22 Comment(1)

Downvoted. Solution should be explained here, not linked externally (link has since moved). – Lachman 19/11, 2015 at 5:19

Here is how to disable DEP at the command prompt:

BCDEDIT /set {current} nx AlwaysOff

Tetherball answered 6/12, 2011 at 14:23 Comment(0)

On Windows Vista and later, DEP and PAE are enabled at boot time and are configured by setting values for the nx and pae parameters using the BCDEdit /set command.

To disable DEP on Windows Server 2008 type the following on an elevated Command Line

bcdedit /set nx AlwaysOff

Upbraiding answered 15/7, 2011 at 19:38 Comment(0)

you would want to edit boot.ini and change a section contaning /noexecute=optin to just /execute

Mia answered 1/9, 2009 at 19:19 Comment(0)

You should be able to turn DEP off in one of your BIOS settings.

Syce answered 30/7, 2009 at 20:20 Comment(1)

Hardware NX/xD bit only, Software DEP may still be enforced. – Compartment 30/7, 2009 at 20:25

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