Data Execution Prevention (DEP) has not allowed firefox to start, even after reinstalling firefox

Firefox will not start. Windows message tells me Data Execution Prevention (DEP)has prevented this program from starting. Help says: If DEP notices a program on your computer using memory incorrectly, it closes the program and notifies you.

Try updating your QuickTime to the most recent version. Does that clear up the DEP errors in iTunes?

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Data Execution Prevention (DEP) has shut down Firefox to protect the OS. Crashes several times an hour. Help

Firefox is crashing constantly. I have the latest version. Vista 64

If you update to the latest version of the QuickTime Player, does that clear up the DEP messages in iTunes?

How do I keep Windows Data Execution Prevention (DEP) from repeatedly closing Firefox?

Problem started after I installed the last Firefox update. I will be on line then Firefox is shut down and I get a message in a small window that it was shut down Windows DEP which is a security feature in Vista. After a time lapse of several minutes and a reboot of the computer Firefox will start working again but eventually it is shut down again after executing an enter, send, delete or other such command.

Vista 64 bit
Many thanks. If you're still not launching after your complete uninstall/reinstall, we'll go searching for old QuickTime componentry stashed in non-standard locations on the PC.
First we'll need to change some view settings.
In your Start menu, open Computer.
In your Organise menu, select Folder Options.
In the View tab, make sure that "Show hidden files and folders" is selected, and Hide extensions for known file types is unchecked.
Click OK.
Now in Computer, open your C:\ drive (or whichever drive you have your operating system installed on).
Open the "Windows" folder.
Open the "SysWOW64" folder.
What files and folders can you see in there with QuickTime in the title? (In a standard installation of Quicktime you should be seeing precisely two files ... QuickTime.qts and QuickTimeVR.qtx ... and no QuickTime folders whatsoever.)

Data Execution Prevention (DEP) Message - Please Help!!

I have been trying to download iTunes since yesterday. I finally completed the download this morning and was beginning to install in onto my PC, when I received a Data Execution Prevention(DEP) Message. Because of this, I was unable to complete the installation process, and now it appears I have hit a roadblock. My son is desperately wanting to use his iPod, but I am at a complete loss as to what to do next. If anyone has ever encountered this problem and can tell me how to proceed, my son and I would greatly appreciate it. Thank you very much.

Can you do the repair for iTunes as well and see whether you are still getting the message.
If that does not work,you have to follow steps below to uninstall and reinstall Itunes & QuickTime.
Step 1: Uninstall iTunes and QuickTime
I would suggest you to completely uninstall iTunes and QuickTime from your computer without leaving any traces of these programs on your computer. Also, uninstall any third party codecs(like K-Lite Codec) installed on your computer using the Programs and Features wizard from the Control Panel.
Removing iTunes, QuickTime and other software
http://support.apple.com/kb/ht1925
Note: The link above also have instructions to re-install iTunes and QuickTime. Do not re-install it as of now.
Step 2: Download and install the latest version of iTunes
www.apple.com/itunes/download
Step 3: Uninstall QuickTime from Programs and Features
Once you install iTunes, by default you'll have QuickTime installed on your computer. You'll have to uninstall QuickTime from Programs and features.
How to uninstall a program in Windows Vista Programs and Features?
Step 4: Download and install the Standalone version of QuickTime
http://www.apple.com/quicktime/download/win.html
Now check if you’re able to execute iTunes without having any problem.

Data Execution Prevention ( DEP ) WINDOWS IE8

HI
I AM GEETING ERROR Data Execution Prevention ( DEP ) WHILE USING FORMS APPLICATION IN IE8 BROWSER .
IF I DISABLE DEP SETTING IN BOOT.INI IT WORKS....MY PROBLEM WITHOUT DISABLEING DEP HOW FORM APPLICATION CAN WORK..???
IS THERE ANY WAY ?
THANKS AND REGDS
SANTOSH

First, it is important to understand that this issue has nothing to do with Oracle and specifically Forms. This is a security mechanism in the OS/browser.
You do not need to edit the boot.ini to disable DEP. You can change it as follows:
Right click My Computer > Advanced > Performance Settings... > Data Execution Prevention
Click on the radio button labeled "*Turn on DEP for essential Windows programs and services only*". Click on OK to accept the changes (if any).
The alternative, if you want DEP on for ALL programs and services, you will need to add javaw.exe to the exception list.
There have been reports which suggest that if you disable (uncheck) the browser setting "Enable third-party extensions" you may also get it working. I would not rely on this option. Disabling DEP is the correct way to deal with this since it is DEP causing the problem in the first place.

ITunes latest trigging Windows XP Data Execution Prevention (DEP)

Updated too the latest version of iTunes and now I can't run it due to an Data Execution Prevention (DEP) trigger. HELP!
How do I fix this?
Is there a different version avail that fixes this (a bet perhaps?)?
WinXP SP3 32bit
iTunes ver: 11.3.1.2
HELP!

Hello PPNSteve
Check out the article below for troubleshooting issues with iTunes crashing on you. You may end up having to remove iTunes and its associated software and then installing a iTunes again.
iTunes for Windows Vista, Windows 7, or Windows 8: Fix unexpected quits or launch issues
http://support.apple.com/kb/TS1717
Regards,
-Norm G.

Data Execution Prevention (DEP) error

Today I downloaded the latest iTunes version, but I can't get it to open. I continue to get a Windows message stating that iTunes has been closed to "protect my computer" via DEP. I unintalled both iTunes and Quicktime, reinstalled iTunes, cleared old Quicktime from the System32 folder, changed the DEP settings to allow iTunes, and have re-booted at least 20 times today. What am I supposed to do to get my iTunes back?

After NUMEROUS times, I finally found a solution that worked for me. I hope it will help someone else. I found this after I uninstalled and reinstalled iTunes, and all other Apple related files and folders many times. Every time I installed iTunes 10.5, I still got the DEP error. This is the soloution I found, although it is not a perfect solution, it's at least working until Apple comes out with a version of iTunes that will not trigger the DEP error.
Here is what I did: I used Uninstall Program in the Windows Control Panel to uninstall everything IN THIS ORDER
1. iTunes
2. QuickTime
3. Apple Software Update
4. Apple Mobile Device Support
5. Bonjour
6. Apple Application Support
Then I went to C:\Program Files and looked for any iTunes or Apple program listed there and deleted it. I have 64-bit, so I then went to C:\Program files (x86) and looked for any iTunes, QuickTime, Bonjour or any other file or folder that had Apple or any Apple program in the name and deleted it.
I went to C:\Windows|SysWOW64\Quicktime and C:\Windows\SysWOW64\QuicktimeVR and deleted them.
Go back to START, and open the "C" drive. Open the USERS folder. Open the folder with your username. Open the AppData folder. Then double-click on the LOCAL folder to open it. If you see any files or folders there that show any Apple program or file, delete those files or folders. Then go to the REMOTE folder and do the same. If there are any other users on this computer, go to each individual user and do the same thing in each LOCAL and REMOTE folder. Restart your computer.
Go to http://www.apple.com/itunes/download/ This is the page where you will actually download iTunes. Scroll down the page to the section under "Windows Software" that says "64-bit editions of Windows Vista or Windows 7 require the iTunes 64-bit installer". Click on that line to get the installer. It will take you to another download window. Scroll to the bottom of the page to the message that says "Download for iTunes 10.4.1 for Windows (64-bit) here: iTunes for Windows 64-bit." Click there to get the download.
This is not iTunes 10.5, so you will not have access to "The Cloud", but it is at least functional until Apple actually comes out with a version that will not activate the DEP message. There was no combination of uninstalling and reinstalling, with or without Quicktime, with 10.5 that did not cause problems with Data Execution Prevention problems, that I found.
I also used Firefox for the downloading instead of Internet Explorer. It just seemed to function better that way. I have Windows Vista Home.
I hope this is helpful to someone. It's just what worked for me.

Unable to open Itunes in Vista - data execution prevention (DEP)

I'm unable to open itunes on my computer. I can install it but not open it. It says that the data execution prevention has stopped the running of the program. I have tried to change the settings of the data execution program, but it will not allow me to accept itunes - as it says that DEP has to be activated for itunes and cannot be deactivated. What do I do?

One temporary solution is to run itunes through XP rather than vista.
To do this go to the program icon (makes sure its not a shortcut, and the actual program icon, you can find this in your program files if its on on your desktop)
sideclick on the icon
go to properties
compatibility tab
check Windows XP service pack 2
tell it to apply
This should allow you to use itunes

Windows DEP will not allow Firefox to load

Been having trouble for some time with Firefox crashing in the middle of sending emails. Downloaded Vers 4 with a hope this would stop. This haven't and today Firefox has crashed some 4-5 times in less than 1 hour. Rebooting PC doesn't help. Following latest crash Firefox will not load not even in safe mode. Now getting Windows msg Firefox has stopped working check online or close the program. Check online gives the msg application failed to initialise properly - click ok to terminate. Have also had a mge stating that Windows DEP (Data Execution Prevention) has seen that Firefox may be a virus or a security threat and that it's attempting to run a program from memory restricted for use by other programs. See DEP in Windows help. unsafe and has closed the program

In the URL field, type: '''about:crashes''' and hit Enter. Then choose the most recent crash (they're links, so click them). You may possibly find some insight into the problem.

Does Apple have a Data Execution Prevention (DEP) compatible version of iTunes for Vista?

I have followed instructions found on the Apple Support boards for the past 3 days regarding the fact that DEP will not allow the iTunes updates to operate on Windows Vista. I wish I had a dollar for every time I have uninstalled adn reinstalled iTunes, only to get the same results. It instally correctly, but will not open. It gets shut down by DEP every time. YOU CAN'T TURN OFF DEP FOR iTUNES IN VISTA!!! I don't care what the instructions from Apple and Microsoft say, it can't be done.
So, does anybody know if Apple has a version of the iTunes that is compatible with DEP? Or, are that hopefully at least working on one? My iPhone and iPod are useless.

Have you downloaded and installed Windows Vista Service Pack 1 yet?
This may assist you with that you are running into. If you have already done this let me know. Could still potentially be something going on with the Apple Software.
If this is the case the link below describes how to fully clean out Apple Software. Possible file that belongs to Apple may of become corrupted and thus causing iTunes not to launch Properly.
But before you check the article out. Have you right clicked on the iTunes Application and chose Run as Administrator?
You can also right click on the iTunes App, Select Properties, and select Compatibility Mode - And make sure that is not turned on and set for something else. As this could potentially be running in a different mode.
http://support.apple.com/kb/HT1926?viewlocale=en_US

Data Execution Prevention (DEP) - Can't open iTunes!! help!

As above, everytime I try and open iTunes a window appears saying DEP has closed the programme to prevent my computer being damaged. I've run all the clearing exercises of iTunes and Quicktime and re-installed it but to no avail. This has only happened after I upgraded iTunes recently. I am using Vista and I have tried allowing iTunes in the DEP control panel however it says DEP must be working in order to execute this programme.
Please can someone help me out!! I don't want to have to system restore!

Have you downloaded and installed Windows Vista Service Pack 1 yet?
This may assist you with that you are running into. If you have already done this let me know. Could still potentially be something going on with the Apple Software.
If this is the case the link below describes how to fully clean out Apple Software. Possible file that belongs to Apple may of become corrupted and thus causing iTunes not to launch Properly.
But before you check the article out. Have you right clicked on the iTunes Application and chose Run as Administrator?
You can also right click on the iTunes App, Select Properties, and select Compatibility Mode - And make sure that is not turned on and set for something else. As this could potentially be running in a different mode.
http://support.apple.com/kb/HT1926?viewlocale=en_US

Reader 10.1.3 shuts down when I open it or open a web page (IE 9), Data Execution Prevention DEP

I am running Microsoft Vista. I've have the latest Adobe Reader 10.1.3. When I try to open Aobe Reader or when I try to open a pdf file through my browser (IE 9), I receive a message stating that Adobe Reader has stopped working and the Data Execution Program has closed Adobe Reader to protect the computer.
I scanned my computer for malware and viruses and it is clean. I tried disabling all browser add-ons and I still have the problem. It appears that this is a common proble listed in the Adobe and Microsoft forums and without a real solution (other than going back to using Adobe Reader 8 - which I haven't tried).
Does anyone have any tested solutions?
Thanks in advance.

I am running Microsoft Vista. I've have the latest Adobe Reader 10.1.3. When I try to open Aobe Reader or when I try to open a pdf file through my browser (IE 9), I receive a message stating that Adobe Reader has stopped working and the Data Execution Program has closed Adobe Reader to protect the computer.
I scanned my computer for malware and viruses and it is clean. I tried disabling all browser add-ons and I still have the problem. It appears that this is a common proble listed in the Adobe and Microsoft forums and without a real solution (other than going back to using Adobe Reader 8 - which I haven't tried).
Does anyone have any tested solutions?
Thanks in advance.

Data Execution Prevention (DEP)

Has anyone run into DEP in IE? I have and it terminates my application when tryting to close external SWFs, but it doesn't always do it, but it is becoming more frequent.
New Info: I just read that this can happen with the HTTP service. I load the menu items from an external XML file via the HTTPService. Wondering if I should just use an array?

You're welcome. Glad you got things sorted out.

Data Execution Prevention (DEP) issue....

Vista installed SP2 last night....Have DEP issue today. Latest Flash PLayer is the culprit. DIsabling it doesn't help, only uninstalling does. Tried unistalling then reinstalling...Same problem. Any insights?

Update....I disbled DEP. End of story.

Firefox will not open on my computer, even after reinstall, with no error message or when I try to run "C:\Program Files\Mozilla Firefox\firefox.exe" -p. Help?

I recently installed firefox so I could use an adblocker. It installed just fine, and it worked just fine for about three days. Then yesterday it stopped opening. I'm on a Toshiba running Windows 7. The icon highlights when I click on it, but then it stops and won't open the browser at all. When I try to run it with the manual command "C:\Program Files\Mozilla Firefox\firefox.exe" -p, I get the error message, "C:\Program Files\Mozilla Firefox\ refers to a location that is unavailable. It could be on a hard drive on this computer, or on a network. Check to make sure that the disk is properly inserted, or that you are connected to the Internet or your network, and then try again. If it still cannot be located, the information might have been moved to a different location." I installed it to that location, and I don't need a disk. I'm connected to the Internet just fine and my other browsers (Chrome and IE) work the same as always. But they're swamped with ads and I really was happy wih Firefox when it was opening...how can I fix this issue?

Certain Firefox problems can be solved by performing a ''Clean reinstall''. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:
'''Note:''' You might want to print these steps or view them in another browser.
#Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
#After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
#Delete the Firefox installation folder, which is located in one of these locations, by default:
#*'''Windows:'''
#**C:\Program Files\Mozilla Firefox
#**C:\Program Files (x86)\Mozilla Firefox
#*'''Mac:''' Delete Firefox from the Applications folder.
#*'''Linux:''' If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see [[Installing Firefox on Linux]]. If you downloaded and installed the binary package from the [http://www.mozilla.org/firefox#desktop Firefox download page], simply remove the folder ''firefox'' in your home directory.
#Now, go ahead and reinstall Firefox:
##Double-click the downloaded installation file and go through the steps of the installation wizard.
##Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.
Please report back to see if this helped you!

Data Execution Prevention (DEP) has not allowed firefox to start, even after reinstalling firefox

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