Blue screen related to Comodo CIS sandbox

Version 8.2

Hello, i did an update of Comodo (which also seemed to update my comodo product) this morning and then started Toolwiz Timefreeze as normal, but shortly after i got a blue screen. I ran bluescreenview and here are the results ;

The crash was related to these two ;

COMODO Internet Security Sandbox Driver

Microsoft® Windows® Operating System…NT Kernel & System

I’m now using the Comodo sanbox with Firefox with no problems.
Any ideas?

Also what is the difference between the Comodo sandbox (with Firefox) and the Comodo Virtual desktop?
If i use just the sandbox will any downloads, PDF’s, history etc stay on my PC after i close the browser?


Just to be clear i wasn’t using the Comodo sandbox with Toolwiz Timefreeze. Only TWTF with a regular FF browser.

Hello ,mof

     Very thanks for you report the issue ,can you attach the dump file about the bule screen ?
     Thanks you .

Hello Flykite,

Here’s a copy & paste of the dump file ;

Dump File : 060715-18267-01.dmp
Crash Time : 6/7/2015 10:16:19 AM
Bug Check Code : 0x000000f4
Parameter 1 : 0x00000003
Parameter 2 : 0x87758030
Parameter 3 : 0x8775819c
Parameter 4 : 0x8201e3b0
Caused By Driver : ntkrnlpa.exe
Caused By Address : ntkrnlpa.exe+dfb84
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.18839 (win7sp1_gdr.150427-0707)
Processor : 32-bit
Crash Address : ntkrnlpa.exe+dfb84
Stack Address 1 : ntkrnlpa.exe+2e26e9
Stack Address 2 : ntkrnlpa.exe+25f688
Stack Address 3 : ntkrnlpa.exe+25f5cb
Computer Name :
Full Path : C:\Windows\Minidump\060715-18267-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 144,376

And here’s the same for the 2 drivers involved ;

Filename : cmdguard.sys
Address In Stack : cmdguard.sys+106a8
From Address : 0x8bf4d000
To Address : 0x8bfea000
Size : 0x0009d000
Time Stamp : 0x551c26a8
Time String : 4/2/2015 12:11:04 AM
Product Name : COMODO Internet Security Sandbox Driver
File Description : COMODO Internet Security Sandbox Driver
File Version : 8, 2, 0, 4508 built by: WinDDK
Company : COMODO
Full Path : C:\Windows\system32\drivers\cmdguard.sys

Filename : ntkrnlpa.exe
Address In Stack : ntkrnlpa.exe+21c3b0
From Address : 0x81e02000
To Address : 0x8221b000
Size : 0x00419000
Time Stamp : 0x553e7a49
Time String : 4/28/2015 1:04:57 AM
Product Name : Microsoft® Windows® Operating System
File Description : NT Kernel & System
File Version : 6.1.7601.18839 (win7sp1_gdr.150427-0707)
Company : Microsoft Corporation
Full Path : C:\Windows\system32\ntkrnlpa.exe


Hi guys,

Do we have a detailed bug report for this ?

Please kindly fill in a detailed bug report for me to invesigate asap.

Thank you all!


As there has been no response, I will move this one to “Resolved” section.

Thank you.