NTVDM CPU has encountered an illegal instruction using Windows XP Firefox 8.0.1 (IE8 does not cause this error)

C:\Windows\install~1\{AC76B~1\SC_ACR~1.EXE
The NTVDM CPU has encountered an illegal instruction.
CS:0dd8 IP:01be OP:ff ff ff 00 00 Choose 'Close' to terminate the application.
I receive the error every time I turn on and off my pc and then start Mozilla Firefox. The problem does not happen if I use IE8.
I have gone to the control panel and removed Firefox 8.0.1 and then downloaded a new version and installed. I still experience the issue.

Make sure that you do not run Firefox in compatibility mode. 
You can open the Properties via the right-click context menu of the Firefox desktop shortcut and check that in the "Compatibility" tab. 
Make sure that all items are deselected in the "Compatibility" tab of the Properties window.

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After uninstalling/installing itunes I get this window 16 bit MS-DOS Subsystem The NTVDM CPU has encountered an illegal instruction CS:05aa IP:0480 OP: 6300 72006f Choose close to terminate. Neither ignore or close works

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Hi there,
I am also experiencing this problem, but with 1.4.2_06. Last week (late Jan 2005) the dynamic versioning was working fine, downloading and installing the latest version of Java as required.
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The NTVDM CPU has encountered an illegal instruction

Hello,
I have a problem with my laptop. Once I sign into Windows I get this error message:
C:\Windows\system32\userinit.exe
The NTVDM CPU has encountered an illegal instruction.
CS:11d8 IP:0109 OP: ff ff ff 90 be choose 'Close' to terminate the application
My laptop is a Compaq Presario CQ61-220 sa Notebook PC
If I click close nothing happens and if I click ignore nothing happens. I have only had the laptop for one year so the warranty has just finished.
Thankyou for your help

Check for malware.
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Make sure that you do not run Firefox in compatibility mode. 
You can open the Properties via the right-click context menu of the Firefox desktop shortcut and check that in the "Compatibility" tab. 
Make sure that all items are deselected in the "Compatibility" tab of the Properties window.

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Make sure that you do not run Firefox in compatibility mode. 
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Crash Reports for the Last 3 Days
All Crash Reports
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JavaScript
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Expected minimum version: 4.10.3
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NSS
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Expected minimum version: 3.16 Basic ECC
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I was using TB on my XP machines and they went down so I was forced to move to a Vista based laptop. It eventually crashed and so I converted my computer from Vista to win 7, Home premium. In both iterations, I have been able to set up TB and transfer all the data & emails that was in them at the time ( from the bood drive that was in the xp machine). but since that time I have not been able to access anything new after that date. It will neither send nor receive emails from both gmail and cox.net accounts that I have. I've attached the settings below. I tried changing some things on [email protected], so that info is obviously wrong.
I've tried deleting TB but apparently have not been able to remove all the data because when I reload it, it just comes back immediately the way it was.
Any help would be appreciated. I really like how TB works and would love to be able to use it again.
Jim
Application Basics
Name: Thunderbird
Version: 31.3.0
User Agent: Mozilla/5.0 (Windows NT 6.1; rv:31.0) Gecko/20100101 Thunderbird/31.3.0
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Hi Andre V.,
When having iTunes Store connectivity issues, the following articles provide the best solutions:
Can't connect to the iTunes Store
http://support.apple.com/kb/TS1368
iTunes: Advanced iTunes Store troubleshooting
http://support.apple.com/kb/TS3297
Thanks,
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NTVDM CPU encountered an illegal instruction

I have a jsp page that displays a graph using an applet and recently updated the page to use dynamic versioning for the JVM. A couple of weeks ago (late Jan 2005) the dynamic versioning was working fine, downloading and installing the latest version of Java as required (it was then 1.4.2_06 and at the time of this post, still is).
However now (early Feb 2005), I am finding that after downloading the Java plugin and beginning the install, I am getting the error below:
16 bit MS-DOS Subsystem
The NTVDM CPU encountered an illegal instruction.
C5:0555 IP:0288 OP:63 6f 6e 74 65 Choose 'Close' to terminate the application.
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cheers

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It worked just fine for me.
Many site issues can be caused by corrupt cookies or cache.
* Clear the Cache and
* Remove Cookies '''''Warning ! ! '' This will log you out of sites you're logged in to.'''
Type '''about:preferences'''<Enter> in the address bar.
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While you are in safe mode;
Type '''about:preferences#advanced'''<Enter> in the address bar.
Under '''Advanced,''' Select '''General.'''
Look for and turn off '''Use Hardware Acceleration'''.
Poke around safe web sites. Are there any problems?
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NTVDM CPU has encountered an illegal instruction using Windows XP Firefox 8.0.1 (IE8 does not cause this error)

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