Comodo x64 resets or hangs system when hamachi installed or ADSL modem plugged

Hello everyone

I ‘ve been using Comodo firewall for one year, but for last half year i`m experiencing difficulties. I’m using Wndows XP x64. Since September i was using Comodo Firewall with no errors. When I updated Firewall to CIS (I’m still using only firewall without AV) my system started to hang up. That time I thought maybe i catched a virus, but now I;’ preety sure it was caused by CIS. After Windows reinstallation I couldn’t use (even install) hamachi, because system started to reset itself with no reason. I didn’t nedd to run hamachi so I left it alone. When i returned to home on holidays, I installed SpeedTouch 330 ADSL modem. System couldn’t properly boot up when modem was pulgged in during boot up, I couldn’t share internet connection wiht other computers, also hamachi didn’t work. All things ended in instatnt system reset. Yesterday, after next reinstall I installed 3.0.25 firewall and hamachi worked, but when I installed ST330 drivers system once again started to reset while modem was connected via USB. Now I have uninstalled Comodo Firewall and everything works fine

Did anyone had similar problem?
Is there any solution?

Thanks (sorry for my english:))

Please try a clean install doing the following. The first part is to rule out any left behinds of previously installed security programs. The second part is uninstalling with manual clean up. Also don’'t import any old configurations. Let us know if the same problem persists or not.

We are gonna take a look to see if there are some old drivers of your previous security programs are still around. Go to Device Manager → View → show hidden devices → now look under Non Plug and Play drivers → when you see a driver that belongs to your previous security programs click right → uninstall —> do this for all drivers → reboot your computer.

When the problem persists make sure there are noauto starts from your previous security programs download Autoruns and run it.

This program finds about all auto starts in Windows. This tool can therefore seriously damage Windows when not handled properly. After starting go to Options and choose to hide Windows and Microsoft entries and then push F5 to refresh.

Now check all entries to see if there are references to your previous security program. When you find them untick them. After unticking reboot your computer and see what happens.

Uninstall CIS and reboot. Then run [url=]Comodo System Cleaner[/url] to get rid off registry keys.

Then delete the Comodo folders under Program Files, Program Files\Common Files, C:\Documents and Settings\All Users\Application Data\ .
For Vista/Win7
Users%username%\appdata\local, Users%username%\appdata\roaming\ and \Users%username%\appdata\local\virtual store

To be even more thorough open Device Manager and set it to show hidden devices under menu option View. Then see if there are Comodo driver(s) left in non Plug and Play drivers. If so select the driver → click right → uninstall and reboot.

Now delete the following:
C:\boot.ini.comodofirewall (this file may not exist).
WARNING: Do not mistakenly remove the original “boot.ini”.

a. HKEY_CURRENT_USER\Software\ComodoGroup\CFP and HKEY_CURRENT_USER\Software\ComodoGroup\Comodo Internet Security
*(If you have other Comodo products installed, delete only the values
for CFP)
c. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services
d. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services
e. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\cmdHlp
f. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Inspect
g. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services
h. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services
i. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\cmdHlp
j. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\Inspect
k. KEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services
l. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services
m. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\cmdHlp
n. HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\Inspect
o. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\cmdAgent
p. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\cmdGuard
q. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\cmdHlp
r. HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
s. HKEY_LOCAL_MACHINE\SYSTEM\Software\Comodo\Firewall Pro
t. HKEY_USERS\S-1-5-21-1202660629-746137067-2145843811-1003\Software\ComodoGroup\CFP
kk. HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\CFP_Setup_3.0.14.276_XP_Vista_x32
ll. HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\CFP_Setup_3.0.14.276_XP_Vista_x64
mm. HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\CFPLog
nn. HKEY_CURRENT_USER\Software\Local AppWizard-Generated Applications\CPFFileSubmission
oo. HKEY_LOCAL_MACHINE\SYSTEM\Software\Comodo\Firewall Pro

*Note: It may not be possible to remove these “LEGACY” keys. If you cannot delete them, leave them in the registry. However, I have subsequently found that you MAY be able to remove these keys in Safe Mode by using a third-party registry tool. To permanently remove them may also require modifying the Permissions for each key. See:;msg119226#msg119226

On this computer I have never installed any other firewall. Yesterday once again I installed 3.10 firewall (with Defence+, like earlier) and system couldn’t boot up with modem plugged in. After few minutes system become frozen, same as before. Only things that left from Comodo are legacy registry keys

What happens when you disable D+ permanently and reboot? Go to Defense + → Advanced → Defense + settings–> tick "Deactivate the Defense + completely (requires a system restart) → reboot when asked. Does the same thing happen?

As for me this error is related with firewall network driver. Disabling D+ didn’t help, but when I installed only AV 3.10 with D+ enabled, CIS works fine

I will leave it here for the devs. It has been proven there is an incompatibility as you stated.