OK, I think I can see the problem. Something in your system blocks installation of one of the firewall drivers. In the case you have any system utilities or security programs for register monitoring, please
turn them off. (Please advise: during the installation process, are you shown any information messages or alerts telling you that something is trying to write itself to autorun? To be precise into this registry key: HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows
If you are sure you don't have/use any such utilities, then ...
2) ... you need to check access rights for this key. To do it, in the regedit.exe application go to the key HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows
. Hover the mouse over the key, right click and select 'Permissions...' from the context menu. You will need to learn what
access rights are available for the group of the administrators (marked with red on the image).
Most probable is the case no.1) and you do have a program blocking writing into this thread. If not, and the problem is with access rights (case no.2), then you somehow lost the rights for this register key -
let me know and together we will try to improve the situation.
3) It might also be the case that your system is infected with a virus blocking writing access to the registry.
Please send me autorun log. You can do it as follows:
a) download Autoruns utility (however you should already have it from here: http://forums.comodo.com/install-setup-configuration-help-cis/cant-install-comodo-firewall-t58939.0.html;msg413602#msg413602
b) in the downloaded archive you have two utilities: autoruns.exe and autorunsc.exe. You'll need the 1st one (autoruns.exe), run it in the command line as follows: autoruns.exe -v -a autoruns.arn
d) wait till the utility finishes scanning of the system and closes. After it closes, next to the utility you will find autoruns.arn file. Zip it and send it to me via e-mail skalenchuk[at]comodo.com
(please do not post it as an attachment on the the forum).
PS: If the installation continues to fail, please try to keep installations log as I described it in my previous post. As I can see the situation, so far we need only the log described in the item 3) (the one created with DebugView) which you could also attach to your e-mail.