When Data Execution Prevention closes internet explorer, does it mean a virus was trying to attack my PC?

Question

original title: Data Execution Prevention

When Data Execution Prevention closes internet explorer, does it mean a virus was trying to attack my PC?

Answer 1

Hi,

EricLaw's IEInternals - A look at Internet Explorer from the inside out. - Understanding DEP/NX

http://blogs.msdn.com/ieinternals/archive/2009/10/10/Understanding-Data-Execution-Prevention-Crashes-in-IE8.aspx

The problem might actually be an addon or other program causing the problem and you

should check that 1st.

What antivirus/antispyware/security product do you have on machine? Include any you have

EVER had on this machine including those you uninstalled (they leave remnants behind which

can cause strange issues).

Start - All Programs - Accessores - System Tools - IE with no Addons - does this work better?

IE - Tools - Internet Options - Advanced Tab - click Restore then click Reset - Apply / OK

IE - Tools - Internet Options - Security - Reset all Zones to default level - Apply / OK

any better?

Close IE and then try IE and/or IE with no Addons

IE - Tools - Manage Addons (for sure disable SSV2 if it is there, this is no longer needed but

Java still installs it and it causes issues - you ever update Java go back in and disable it again.)

Look for other possible problems.

Windows Defender - Tools - Software Explorer - look for issues with programs that do not look

right. Permitted are usually OK and "not permitted" are not always bad. If in doubt about a

program ask about it here.

Could be a BHO - BHOremover - Free - standalone program, needs no install, download and

run - not all are bad however some can cause your issue. (Toolbars are BHO's)

http://securityxploded.com/bhoremover.php

Startup Programs (Vista)

http://www.vistax64.com/tutorials/79612-startup-programs-enable-disable.html

How to Change, Add, or Remove Startup Programs in Windows 7

http://www.sevenforums.com/tutorials/1401-startup-programs-change.html

Also get Malwarebytes - free - use as scanner only. If you ever suspect malware, and that would

be unusual with Prevx running except for an occasional low level cookie (no big deal), UPDATE it

and then run it as a scanner.

http://www.malwarebytes.org/

I would add prevx as well.

Prevx - Home - Free small, fast, exceptional CLOUD protection, works with other security

programs. This is a scanner only, VERY EFFECTIVE, if it finds something come back here

or use Google to see how to remove. 

http://www.prevx.com/

PCmag - Prevx - Editor'a Choice

http://www.pcmag.com/article2/0,2817,2346862,00.asp

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Do yourself a big favor and work through the above 1st.

Data Execution Prevention Internet Explorer Windows 7 Included - several fix methods herehttp://hubpages.com/hub/Data-Execution-Prevention-Internet-Explorer

Data Execution Prevention or DEP feature in Windows Vista & Windows 7 - also see links at thebottom of this page.http://www.winvistaclub.com/f33.html

How to control DEP however I do not recommend turning it off and certainly not leaving it off.

How Turn DEP On or Off for a Program in Vista (and Windows 7)

http://www.vistax64.com/tutorials/65790-dep-turn-off-programs.html

How to Enable or Disable DEP in Vista (and Windows 7)

http://www.vistax64.com/tutorials/120778-dep-enable-disable.html

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If nothing else works you can try this however I would use as last resort.

IE - Tools - Internet Options - Advanced Options - Security Section - uncheck Enable Memory

Protection to Mitigate OnLine Attacks - APPLY - OK   Close and Restart IE

Hope this helps.