You are right, excuse me.
Information on my pc :

  • CPU : AMD Athlon 64 X2 Dual Core Processor 5400+
  • OS : windows XP Sp2 32bit updated to the last patches
  • the only real-time protection besides to comodo firewall is avg antivirus free
  • the always running application are live messenger, babylon, active desktop calendar and ATI catalyst control center
  • the firewall is in costum policy mode while the defense+ is disabled (not deactivated); besides I have unchecked in the monitor setting of defense+ the voice “protected registry keys”
    I’ve added some global rules in the firewall, blocking the ports 135 to 139, 445 and 500.

I think that’s all.

:), Zipe.

Do you have problema only with the System partition? Can you checkdisk other partitions normaly? I like to do that with my partitions once on a couple of weeks, I hope it’s fixed by the time I do with system partition again.

With the “non system” partitions I don’t have any problem, also because there is no need to reboot, nor before neither after the chkdsk.
To say the truth at first i didn’t think it could be comodo’s fault, then browsing the internet I found that the same problem was caused by other security suites.

:), Zipe.

I’m also having this BSOD problem…

It suddenly goes BSOD after the chkdsk. The BSOD is to fast to track as it quickly reboots my PC.
Now i have to switch to the last working configuration to get into windows. I checked for minidumps…so far didn’t get any :frowning:

[ at ] bla5t

You need to change your Startup and Recovery Settings to stop from rebooting. For XP do the following:

Right-Click My Computer->Properties->Advanced Tab->Startup and Recovery Settings->Uncheck Automatically Restart


I just upgraded to Comodo Firewall Pro
I get the exact same error when I try to do CHKDSK C: /f when I restart I had to use Last Known Good Configuration to get into Windows.
There was no memory dump for it. Hopefully this is fixed soon.

Ok developers addressed this issue but without a crashdump they had to make an educated guass about a possible cause.
When the next version will be out follow the bsods guidelines and test this again.

What is written in the thread you provided the link to, my computer should have written a minidump, it was setup to do it before. Since I have used them before.
I want to add this;
I have C:\ (System) and D:\ (Backup)
If I want to do a “CHKDSK D: /f” I do not need to restart, but for the C:\ I do need to restart. I just done a CHKDSK D: /f and computer did not crash. I am however going to restart and I am hoping it does and creates a minidump.
I am going to do CHKDSK C: /f and hopefully it will write a crash dump
I done it, and used the Recovery Console before using “Last Known Good Configuration” to go to the DUMP File still there was none. For some reason it is not creating one.

I don’t experience BSOD. Here are some details:

CPU X86, Windows XP SP2 x32
Actively-running security and utility applications: CFP, CMF

Disk partitions: C (boot partition), D (has windows installed). Both require system reboot to complete chkdsk. Tested on both with chkdsk /f.

Maybe BSOD occurs only when partition is bootable and has Windows installed :THNK

I have;
Windows XP Pro with all the updates.
Avast Home Edition
Comodo Firewall Latest version
Intel Pentium D 802 or 805 not sure 2.66 GHz
GeForce 6200 latest drivers
Comodo Defense+ OFF and Firewall Security set to custom

I am hoping this helps, Comodo Firewall is a brilliant and I want to continue to use it.

XP SP3(RC) x32
D+ Train w Safe Clean PC, Block all unknown if app closed – not checked.
OK, you made me curios – and I thought this not one of my features –
But, when I saw gibran experienced the same, I’ve allowed the cat out of the bag:
choose to run checkdisk on the two partitions, SATA2 /NTFS, both XP, one system, one pagefile , haven’t done this in a month or so.
Because I have /noguiboot option in boot.ini, I couldn’t tell what’s going on, completely blank screen, but I’m used to it – seems that nothing is; hardware reboot – this time hdd light sparkled, and completed chkdisk for c:
Both drives require system reboot to complete chkdsk – skipped the second by pressing a key -I had no BSOD at any point but…

Here I have to mention that I have more than 18 years experience in dos (ms-dos) os – never seen something like this before:
windows gui loaded, but crashed when trying to access menu / control panel.
Rebooted immediately – everything went eventually back to normal, but I have these logs in event viewer:
[i]Checking file system on C:
The type of the file system is NTFS.
Volume label is LOL.

A disk check has been scheduled.
Windows will now check the disk.
Cleaning up 28 unused index entries from index $SII of file 0x9.
Cleaning up 28 unused index entries from index $SDH of file 0x9.
Cleaning up 28 unused security descriptors.
CHKDSK is verifying file data (stage 4 of 5)…
File data verification completed.
CHKDSK is verifying free space (stage 5 of 5)…
Free space verification is complete.

102398278 KB total disk space.

24497269 allocation units available on disk.

Internal Info:

Windows has finished checking your disk.
Please wait while your computer restarts.[/i]

This one – I’ll call normal, but then:
3 times:
[i]The shell stopped unexpectedly and Explorer.exe was restarted.

For more information, see Help and Support Center at Microsoft Support.
Source: Winlogon
EventID: 1002[/i]
an then:
[i]A critical system process, C:\WINDOWS\system32\lsass.exe, failed with status code c0000006. The machine must now be restarted.

For more information, see Help and Support Center at Microsoft Support.
Source: Winlogon
EventID: 1015[/i]

I’ll dig tomorrow all the way through – I NEVER had any problems with chkdisk, and I’m using the same distro of XP for about 5 years now. I’m not saying CPF caused it, but I’m seriously concerned about loosing data.
I’ll post more tomorrow.
Edit: second chkdsk – same behavior – then, all comes back to normal.

Yes, looks like only system partition causes trouble.
Would it be possible that D+ considers SATA drives removable during boot? XP does list SATA in the removable list.
Anyway, I’m not sure I want to test this any more; takes me about 2 hours to complete chkdsk on 250GB hdd. Sorry I’ve busted into your topic.

I don’t know why I didn’t check the Event Viewer;
Checking file system on C:
The type of the file system is NTFS.

A disk check has been scheduled.
Windows will now check the disk.
Cleaning up minor inconsistencies on the drive.
Cleaning up 47 unused index entries from index $SII of file 0x9.
Cleaning up 47 unused index entries from index $SDH of file 0x9.
Cleaning up 47 unused security descriptors.
CHKDSK is verifying Usn Journal…
Usn Journal verification completed.
CHKDSK discovered free space marked as allocated in the
master file table (MFT) bitmap.
Windows has made corrections to the file system.

80035796 KB total disk space.
15921000 KB in 93476 files.
36376 KB in 7943 indexes.
0 KB in bad sectors.
294624 KB in use by the system.
65536 KB occupied by the log file.
63783796 KB available on disk.

  4096 bytes in each allocation unit.

20008949 total allocation units on disk.
15945949 allocation units available on disk.

Internal Info:
10 b9 01 00 35 8c 01 00 d1 33 02 00 00 00 00 00 …5…3…
3c 02 00 00 02 00 00 00 26 04 00 00 00 00 00 00 <…&…
ba 77 34 08 00 00 00 00 cc 5a 5e 5c 00 00 00 00 .w4…Z^.…
a4 63 e9 13 00 00 00 00 00 00 00 00 00 00 00 00 .c…
00 00 00 00 00 00 00 00 1c 58 f4 87 00 00 00 00 …X…
70 72 8d 9e 00 00 00 00 a8 39 07 00 24 6d 01 00 pr…9…$m…
00 00 00 00 00 a0 bd cb 03 00 00 00 07 1f 00 00 …

Windows has finished checking your disk.
Please wait while your computer restarts.

For more information, see Help and Support Center at Microsoft Support.

My boot and system partitions match.
I too have a winlogon entry in Event viewer with a chkdsk report.
I had a Stop F4 BSOD this time.

Glad to see you haven’t dropped the issue.
I’ve repeated the chkdsk on a very similar environment but: (IDE hdd, no nVidia drivers, XPx32 SP2 + updates, Firewall updated online-no clean install).
I had no problems with this one – boot and system on C: drive.

Do you guys use SATA also?
We’ll get to the bottom of this, eventually; anyway, cmdGuard.sys is loaded before chkdsk is performed. I’d like my firewall to control access to NIC but to leave disks, files and other stuff alone during boot. Otherwise I can already see bloatware waiting around the corner.

My Os run on a Sata disk

Reading tips:
“T17=Did you know that Defense+ will not consider executables from non-fixed drives (floppy, CD, USB) or network drives as safe in “Clean PC Mode”?”
Win is listing SATA as removable, although it won’t let the user disconnect. Just an idea.
Thanks, gibran.

I am using IDE for both HDDs but I can use SATA

OK, thanks Darkness123, so it isn’t SATA.
I’ve booted with log on the pc that crashes with the chkdsk.
Here is the log before yesterday crash; one of them must conflict somehow, maybe nVidia graph driver? (ver. (6.14.1) 169.21 on nVidia GeForce 8500GT)
also, I have uxtheme.dll and tcpip.sys patched.
Running out of ideas… :THNK

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Do you all get SESSION5_INITIALIZATION_FAILED? I consistently Get Stop F4 BSODs after windows logging in windows

I have a P4 HT, My system internet browser is Firefox, OS: XP sp2 32bit
AV: None
Security Apps: Comodo Firewall Pro 3.0.17, Comodo Memory Guardian
My sata controller is set to AHCI mode. To my knowledge all my HDs are set to fixed disk and are not cosidered removable drives.

I reproduced this issue setting D+ slider to disabled. After a checkdisk and logon I noticed that CFP gui could not be loaded.
If I attempted to load it manually it will silently crash.
However attempting a logoff triggered a bsod (stop f4)

This is a slightly diffrent behaviour.
Anyway If I’m the only one who gets Stop F4 bsods my feedback is not much relevant to this issue.


Intel Core2 quad Q6600 2.4GHz,// 2G DDR2 SDRAM PC6400 // Phoenix - AwardBIOS v6.00PG
Nvidia chipset mboard, nVidia GeForce 8500GT graphics.
OS: nLited XP Pro x32 SP3(RC),
No resident security or other.
CFP, clean install; FW Custom (alert-very high) – D+ Train w safe
My system internet browser is Firefox 2.x

You’re right, gibran.
Yesterday, I only wanted to confirm the bug; And I was also tired and kind off stunned-speechless about the crash.
About SATA - if you don’t have any IDE, on clean windows install, SATA are considered fixed. But if you install any IDE CDROM drive or something, windows installs the IDE driver and an icon pops next to the clock, like when using USB drives. This doesn’t mean that you can remove the OS boot drive. But you can add more hdd drives, and those are removable. - I don’t have the AHCI feature as an option in BIOS.

No SESSION5_INITIALIZATION_FAILED error here, but I try to keep the load as light as possible. But explorer crashing is serious enough, might be triggered by the same thing, and I think your expertize is relevant.

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