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Updated again – Disable DEP in Vista Business.

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FF has been crashing on a near daily basis lately. As often as not, a DEP error window flashes briefly when it does. I’d like to disable DEP to see if that will solve the problem. A friend who doesn’t run Vista turned me on to this link. I’ve seen several different commands for disabling DEP in my search, and I don’t know schitt from schinola when it comes to deciphering what these commands will really do.

So… will this do the trick and disable DEP without screwing up my machine?

http://www.tech-recipes.com/rx/1261/vista_disable_dep_noexecute_protection_fix_explorer_crashing/

Thanks.

Topic

Clarifications

In reply to Updated again – Disable DEP in Vista Business.

Clarifications

Somebody there

In reply to Updated again – Disable DEP in Vista Business.

Mention toolbar add-ons. Tried that yet?

And, the Service Pack number?

click start navigate control panel, system & Security

In reply to Updated again – Disable DEP in Vista Business.

then System. Click advanced system settings.

under performance, click the settings tab, then click the data execution prevention tab.

there you can turn DEP off for FireFox.

note: I really wouldn’t turn this off. If firefox is throwing a DEP error, then there’s something the program is doing that it shouldn’t be.

you might want to try running the program in compatibility mode to see if that solves the problem. right click firefox and choose properties. Then click the compatibility tab, choose Windows XP SP3 mode.

CG IT

In reply to click start navigate control panel, system & Security

You, are impressive.

Thanks but I’m not just experience is all.

In reply to CG IT

.

Ok.

In reply to click start navigate control panel, system & Security

But will that command do the trick to disable it machine wide?

Not sure

In reply to Ok.

But it may have a utility for automatic insertion of apostrophes.

you can turn it off machine wide

In reply to Ok.

from that screen or for a particular program.

if you want to turn it off machine wide, then choose the off button and click apply. It turns of DEP for everything.

That doesn’t work on XP, right? (no text)

In reply to you can turn it off machine wide

.

that’s for Vista

In reply to That doesn’t work on XP, right? (no text)

but DEP in XP is the same. you simply turn it off and don’t put any programs in the list.

Start control panel, [classic view] system, advanced, performance, DEP tab.

That’s what I’m getting at.

In reply to that’s for Vista

There are 2 On buttons, no Off button. One On button turns it on for all of Windows files and whatnot and the other button turns it on for all programs except those specified.
I was just trying the second button for all programs and found that Gadwin’s Print Screen wouldn’t work so I switched it back to the other on button because even though I gave permission for Print Screen it still didn’t work.

yeah but why turn it off in the first place?

In reply to That’s what I’m getting at.

data execution prevention is so that programs can’t execute from non excutable memory regions. In Boxies case, FF should not be throwing an exeception with DEP meaning it shouldn’t try and execute from a non excutable region of memory. The Blaster and Sassar worms exploit the buffer overflow attack which DEP was designed to prevent. Buffer overflow is executing from non excutable regions of memory.

Boxie could have DEP on for everything but FF but that means that FF could execute from no excutable regions of memory reserved for data, and that could allow a buffer overflow attack through the browser.

always on always off is controlled by the boot.ini file.

this is what the boot.ini file looks like with the DEP turned off.

[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS=”Microsoft Windows XP Professional” /fastdetect /NoExecute=AlwaysOff

the NoExecute=AlwaysOff turns off DEP.

I don’t want to turn it off. Boxy does.

In reply to That’s what I’m getting at.

She’s looking to turn it off via the command line.
I have my DEP turned on and intend to keep it on. I just tried to turn it on for all programs to see what that’d do.

Boxie shouldn’t turn it off at all

In reply to That’s what I’m getting at.

FireFox shouldn’t be throwing an execption in DEP eg trying to execute from non excutable regions of memory and if it does, she ought to get on the FF boards and see if there’s a patch or newer version.

and as mentioned, it’s the boot.ini file that controls DEP. So when she boots up, it will always be on with the NoExecute=OptIn switch which is the default.

There is no off button.

In reply to you can turn it off machine wide

Hence my asking about the command in that article.

You know that I’ve told you…

In reply to There is no off button.

Nobody ever listens to me.

I ran XP for years

In reply to You know that I’ve told you…

sans DEP with no problem. I did that because DEP was a pita in several areas. I’m pretty conservative in my life online. I also pay attention to the latest bug reports, virus, scam, malware reports. I also run several tools for dealing proactively with same. FF isn’t the only thing DEP is messing with and I want rid of it. Silly, or not.

More power to you.

In reply to I ran XP for years

I’ve never had any issues with DEP so I’ve never tried to disable it.

then you modify you boot.ini file

In reply to I ran XP for years

to change the NoExecute=OptIn switch
to NoExecute=AlwaysOff switch.

But if you wish, google turn off DEP
and you’ll get a lot of links for turning it off.

Now I have to laugh.

In reply to I ran XP for years

Boxy got the original link she posted from me after she told me that she wanted to turn off DEP. I got it after searching with Google. She posted it here because she wanted confirmation that it was advice that she could trust. :^0 It all strikes me as hilarious.

Well she wanted to know if it would screw up her computer

In reply to You know that I’ve told you…

and the answer is “maybe” because buffer overflow attacks are one of the security holes DEP is supposed to fix by not allowing applications to execute from non excutable regions of memory.

Think I’ll give up posting suggestions,

That’s not how it reads.

In reply to Well she wanted to know if it would screw up her computer

She wants to know if that command will screw up her machine or just turn off DEP and not whether or not turning off DEP will screw up her machine.

Thus why I shouldn’t post suggestions anymore old age

In reply to Well she wanted to know if it would screw up her computer

old age is making comprehension difficult. Maybe new glasses would help.

Try new glasses first, CG IT.

In reply to Well she wanted to know if it would screw up her computer

You give good advice. I’ve learned a lot from you, and I’d bet my life that many, many others have, too.

I’m sorry if I came off as harsh in any way.

CG IT

In reply to Ok.

Ignores me, but I don’t ignore CG IT.

????

In reply to CG IT

not ignoring anyone except the forum trolls, and those who ask exceptionally dumb extemely vague or otherwise silly questions… and that’s not you…

but if boxie simply looks, .. but that’s up to her….

I never run a script or registry hack unless I’ve tested the thing myself and I don’t do it when there is a non registry hack or script way to achieve the same results even after I’ve tested it.

There’s a reason for this. Not all registery changes or scripts are good to do even if it gives you the desired result by simply changing the key value from 0 to 1 or running a vb script. The less you muck around with the registry, the better it is.

I’ve run across to many people who think their wizs with Windows only to have them bring it in saying, well I ran this registry change I found off the internet so I could ______and now the computer won’t boot or it won’t do something.

I referred

In reply to ????

As I do to you (most-vaunted sage in these matters), only to the [i]very[/i] narrow use of the hyphen.

The hyphen is the only sage, pointillio-like matter to which I refer.

All else, I sit at your knee.

Meaning, you also need a hyphen.

I’m just a simple farmer…english please

In reply to I referred

🙂

So am I

In reply to I’m just a simple farmer…english please

I wish to tell you, simply, that I greatly appreciate your input; that I try my best to tell you so; that I only tell you, as I do [b]Boxy[/b], you need a hyphen, now and again, to put a definitive point to your expertise.

Ah thanks, :)

In reply to I’m just a simple farmer…english please

🙂

Here is the error information:

In reply to Updated again – Disable DEP in Vista Business.

Problem signature:
Problem Event Name: APPCRASH
Application Name: firefox.exe
Application Version: 1.9.1.3523
Application Timestamp: 4a92de61
Fault Module Name: NPSWF32.dll
Fault Module Version: 10.0.45.2
Fault Module Timestamp: 4b5f91c2
Exception Code: c0000005
Exception Offset: 002e8b7f
OS Version: 6.0.6000.2.0.0.256.6
Locale ID: 1033
Additional Information 1: 8d13
Additional Information 2: cdca9b1d21d12b77d84f02df48e34311
Additional Information 3: 8d13
Additional Information 4: cdca9b1d21d12b77d84f02df48e34311

Unless I’m grossly mistaken, NPSWF32.dll
is a Flash module. So it looks like Flash is the culprit? If so, why is a DEP error being thrown? Or is that just a fluke of some kind?

Thanks.

Does it crash in Safe Mode? (no text)

In reply to Here is the error information:

.

Dunno.

In reply to Does it crash in Safe Mode? (no text)

Hadn’t thought ’til you mentioned to check.
[ slaps forehead, whispers duh ]

I’m interested to know if it works or not.

In reply to Dunno.

I’m leaning towards what CG IT suggests; don’t disable DEP. It seems like there should be a way to fix one program’s problems without turning off DEP.

I found the answer

In reply to Here is the error information:

http://home.comcast.net/~steveham21/turbo.mpg

DEP error

In reply to Here is the error information:

Because some illegal memory operation is occurring, which also causes FF to crash (or FF crashes because DEP stops code executing from memory which is needed in this circumstance to keep the app running).

At a guess, I’d say Flash is responsible for more browser crashes than any native browser code. (Also responsible for more vulnerabilities, for which DEP is a pretty good answer.)

Try updating Flash.
You may also want to upgrade your FF.

Oh, hey

In reply to DEP error

Have a look at search results for firefox 1.9.1.3523 – all about crashes.

http://www.google.com/search?ie=UTF-8&oe=utf-8&q=firefox+1.9.1.3523

http://support.mozilla.com/tiki-view_forum_thread.php?locale=fr&comments_parentId=481911&forumId=1

This answer is substantially what I’d suggest. Try running FF in Safe Mode. You may have a corrupt FF profile or troublesome add-on/extension.

This is weird.

In reply to Updated again – Disable DEP in Vista Business.

At least I think so. Now that I’ve moved back into the office and hard-wired my connection again (as opposed to wireless in the other room), I’ve had no crashes. :0

That suggests to me that my wireless connection can’t handle a lot of Flash?

[Author]

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