Avast WEBforum

Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: Omonimo on February 27, 2011, 10:42:21 AM

Title: [SOLVED] After upgrading Avast error c000021a
Post by: Omonimo on February 27, 2011, 10:42:21 AM
After upgrading Avast I reboot and the PC crash at logon with error
STOP: c000021a (Fatal System Error). The Windows Logon
Process System process terminated unexpectedly with a
status of 0xc00000080 (0x0000000 0x00000000). The system
has been shut down
I can't go also in safe mode (a similar error) wath can I do ?
Maybe Avast installed some driver in the last release ?

yours

Alberto
Title: Re: After upgrading Avast error c000021a
Post by: DavidCo on February 27, 2011, 10:55:35 AM
Are you using XP, if so do a search on the code
Seems to be a known problem and not dependent on your AV
 
Title: Re: After upgrading Avast error c000021a
Post by: Omonimo on February 27, 2011, 11:05:03 AM
Yes I use XP,
but I did a search, the rare people that received this error
(complete with 0xc00000080) seems to solve with a reistallation,
I think it depend from the AV because the error appeared at reboot after
upgrading the AV, and I saw that the upgrading downloaded a SYS file.
I don't do anything else in this session.

yours

Alberto
Title: Re: After upgrading Avast error c000021a
Post by: DavidCo on February 27, 2011, 11:09:46 AM
Or repair
From the look of the Microsoft KB's on the subject it isn't so rare
Have you search Technet
Title: Re: After upgrading Avast error c000021a
Post by: Omonimo on February 27, 2011, 11:22:19 AM
I tried from the CD recovery console, but the LAST KNOWN GOOD CONFIGURATION
don't work, I can try the recovery of the registry as explained in he technet,
wayh do you think ?

Alberto
Title: Re: After upgrading Avast error c000021a
Post by: DavidCo on February 27, 2011, 12:26:32 PM
What version of XP are you running, especially the SP
XP dosn't back up all of the hives, so whilst it shouldn't make things worse....
Title: Re: After upgrading Avast error c000021a
Post by: Dwarden on February 27, 2011, 06:38:49 PM
please follow these  instructions

please upload Your minidump to so Avast staff can analyze it
to
ftp.avast.com/incoming

(files are usually located in C:\Windows\Minidump
it's .dmp file from time of the BSOD

Title: Re: After upgrading Avast error c000021a
Post by: DavidCo on February 27, 2011, 07:16:34 PM
Dwarden
The OP can't get past logon

Title: Re: After upgrading Avast error c000021a
Post by: Dwarden on February 27, 2011, 08:18:33 PM
he should try boot into safe mode / safe mode with networking and uninstall Avast there then

and ofcourse upload the dumps if any present

(i dont think renaming the avast asw*.sys files to e.g. asw*.sys_disabled in Windows XP will work w/o issue)
Title: Re: After upgrading Avast error c000021a
Post by: doktornotor on February 27, 2011, 08:20:42 PM
he should try boot into safe mode / safe mode with networking and uninstall Avast there then

That won't exactly work either:

I can't go also in safe mode (a similar error) wath can I do ?

Title: Re: After upgrading Avast error c000021a
Post by: DavidCo on February 27, 2011, 08:45:44 PM
Use a live CD and copy the file to another medium
It may help, but....
Title: Re: After upgrading Avast error c000021a
Post by: Dwarden on February 27, 2011, 09:00:06 PM
or usage of last known working configuration tho that might be tricky
Title: Re: After upgrading Avast error c000021a
Post by: Omonimo on February 28, 2011, 09:29:56 AM
or usage of last known working configuration tho that might be tricky

thanks for replay but in recovery console the last working configuration don't
do anything, I already try it

another thing is the asw*.sys the only file loaded by the registry ?


yours

Alberto
Title: Re: After upgrading Avast error c000021a
Post by: Omonimo on February 28, 2011, 01:48:38 PM
up
Title: Re: After upgrading Avast error c000021a
Post by: DavidCo on February 28, 2011, 02:05:00 PM
Quote
another thing is the asw*.sys the only file loaded by the registry ?

I think I am losing it :-[
I do not understand the quoted above
If you cannot get access to Windows - no logon, no safe mode etc how can you 'see' what is loaded by registry

Title: Re: After upgrading Avast error c000021a
Post by: Omonimo on February 28, 2011, 02:48:58 PM
I have a utility (ERD Commander)
that permits to runa live version of windows and permit to access to the registry,


alberto
Title: Re: After upgrading Avast error c000021a
Post by: Dwarden on February 28, 2011, 04:48:59 PM
he can disable the files from loading by renaming then (but to be fair i don't remember if it works well enough in XP)

e.g. using the recovery mode or booting into other OS etc.

the answer about is  asw*.sys
there are multiple files not one, * means any text so you need disable these
if someone has WindowsXP by hand You may help by telling what all drivers are loaded on boot by Avast v6
Title: Re: After upgrading Avast error c000021a
Post by: Omonimo on March 01, 2011, 10:37:05 AM
there are multiple files not one, * means any text so you need disable these
if someone has WindowsXP by hand You may help by telling what all drivers are loaded on boot by Avast v6

I use the v5 last update

yours

Alberto
Title: Re: After upgrading Avast error c000021a
Post by: Omonimo on March 02, 2011, 12:06:13 PM
no suggestion ?
Title: Re: After upgrading Avast error c000021a
Post by: Omonimo on March 02, 2011, 05:32:15 PM
digging in internet I found that some virus (ex. bagle) disabled the Safe Mode !
So it is possible that a virus crashes avast and as conseguence crash also the logo ?

Alberto
Title: Re: [SOLVED] After upgrading Avast error c000021a
Post by: Omonimo on March 13, 2011, 12:15:20 PM
Hello

There are 2 news, one good and one bad !
The good: I succeeded thanks to ERD Commander to return at
the last restore point, so the PC restarted.
The bad is that at the start I received from avast an error
that the version 5.1000 don't succeeded i installing himself regularity,
so the conclusion is that was just the updating to ver. 5.1000 to damage
the system, so I uninstall completely avast then I reinstall the previous version
and everything is good now. 
I hope my adventure could useful to someone else

Alberto