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RegRun Security Suite
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How to fix problem with BSOD in Windows Logon Process STOP:C000021a (0xc0000142)


Some days ago my friend asked my help with his computer.

All worked well till the Monday when he saw how his computer reboots every time when the Windows started. The computer passed the first boot phase when the "Windows XP" message is displayed on the black background. But when the computer tried to go to the graphic mode it is immediately rebooted.

I pressed F8 during boot and tried "Last known good configuration".

No luck.

Safe mode do not work too.

After that I choose the option to stop on errors to avoid auto restart and I can see the message typical BSOD message.

STOP: c000021a {Fatal System Error}

The windows Logon Process system process terminated unexpectedly with a status of 0xc0000142 (0x00000000 0x00000000). The system has been shut down.


I googled for this error and found nothing solutions. Microsoft.com has several articles but they are related to Windows NT4 or Windows 2000 and they do not help me.

I made the search in the Windows XP DDK headers.

Wow!


// MessageId: STATUS_DLL_INIT_FAILED
// {DLL Initialization Failed}
// Initialization of the dynamic link library %hs failed. The process is terminating abnormally.
#define STATUS_DLL_INIT_FAILED ((NTSTATUS)0xC0000142L)

Now I found the source of the problem. Winlogon.exe could not start because it could not load the one or more linked DLLs. These may be if the DLLs were recently changed. I created the list of the DLLs linked to the Winlogon.exe. It was the large list. I made the new installation of the Windows XP to the same disk to the Windows.0 folder to get access to the hard drive. Another way is using Windows PE CD (Bart PE or WindowsLive).

After that I checked the sizes and versions of the DLLs from my computer. I found that 3 difference:

  1. Gdi32.dll
  2. Msvcrt.dll
  3. Comctl32.dll
(They can be transferred on one floppy as well)

I replaced these DLLs in the Windows\System32 folder and reboot.

Windows started successfully!

I thought that my friend installed some software that can changed the DLLs. However he didn't remember this fact.

But today I saw the same error on the computer in our local network. No software has been installed. Only Windows updates.

Now I found only 2 changed files:

  1. Gdi32.dll
  2. Msvcrt.dll
Something wrong in Windows updates process?

Anyway if you need a way to fix it without reinstalling Windows us this article.


Dmitry Sokolov

Suggest you to use RegRun Platinum Edition to be sure that your rootkit's clear!

Good luck!


What's new?
January 24 2017

Released RegRun Security Suite 8.60.0.560
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 8.60.0.560 - free software for detecting and removing rootkits & malware.

December 15 2016

Released RegRun Security Suite 8.50.0.550
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 8.50.0.550 - free software for detecting and removing rootkits & malware.

November 28 2016

Released RegRun Security Suite 8.41.0.541
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 8.41.0.541 - free software for detecting and removing rootkits & malware.

November 1 2016

Released RegRun Security Suite 8.40.0.540
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 8.40.0.540 - free software for detecting and removing rootkits & malware.

October 12 2016

Released RegRun Security Suite 8.30.0.530
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 8.30.0.530 - free software for detecting and removing rootkits & malware.

September 1 2016

Released RegRun Security Suite 8.20.0.520
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 8.20.0.520 - free software for detecting and removing rootkits & malware.

July 8 2016

Released RegRun Security Suite 8.12.0.512
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 8.12.0.512 - free software for detecting and removing rootkits & malware.

April 7 2016

Released RegRun Security Suite 8.0.0.500
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 8.0.0.500 - free software for detecting and removing rootkits & malware.

March 29 2016

New! Edge Reset Button
Edge Reset Button is a free tool for resetting Microsoft Edge Browser.

March 14 2016

Released RegRun Security Suite 7.97.0.197
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 7.97.0.197 - free software for detecting and removing rootkits & malware.

February 3 2016

Released RegRun Security Suite 7.95.0.195
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 7.95.0.195 - free software for detecting and removing rootkits & malware.

December 16 2015

Released RegRun Security Suite 7.90.0.190
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 7.90.0.190 - free software for detecting and removing rootkits & malware.

November 25 2015

Released RegRun Security Suite 7.85.0.185
Full version is available for download.
Update is free for registered users

Released RegRun Reanimator 7.85.0.185 - free software for detecting and removing rootkits & malware.

September 10 2012

BootRescue - free software for Master BootRecord (MBR)/Volume Boot Record (VBR) backup/recovery.


All News


RegRun is able to remove TDL 4 rootkit (MBR infector) on the Windows 32 and 64 bit!


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RegRun has been reviewed by 3d2f.com Software Directory: RegRun Security Suite is an excellent tool that will reliably protect your computer from a plethora of existing and emerging threats and will keep malware at bay.



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Removal Baidu rootkit (cnprov.sys)


Removal Spooldr(ecard.exe) rootkit


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They say
"RegRun Security Suite is one of those very rare tool kits that no one who is serious about protecting their PC should ever be without. This toolkit covers all the bases when it comes to eradicating the attempted security threats from malware that we all face - daily. The near real time tech support, direct from Greatis, is nothing sort of superb, something that can be rarely said these days! I have no hesitation in recommending this suite to anyone."

Miles Pearson

Wilders.ORG. Security advisors recommend...

Testimonials
You guys are awesome!!!!
Traci www.pentagonattack911.com

Bob Schmulian:
Absolutely love it and have recommended to many people!

Ian Robinson:
It is FANTASTIC! It has saved my life on more than one occasion since I purchased it less than 6 months ago. I now would not run my system without it... it's worth many times the cost! The service and support are terrific. Helpful - friendly - and accommodating; and generally a reply is received within 12 hours. Just great.

Theodore Soucie:
Since RegRun was installed my system is more stable. I use to experience freezeup daily. I have not had a crash.

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