after installing comodo firewall, no network packets are sent out, network connection cannot be estblished, dhcp hangs, comodo reports network driver failure, but offers no further diagnosis.
after uninstalling comodo firewall and rebooting, network works again normally.
Then go to Device Manager and make it show hidden devices (under View). Then see if under Non Plug and Play drivers there are Comodo related entries. If so uninstall (click right on the entry) them and reboot.
Then try a new install. Let us know if that works.
There were no obvious CIS-related files neither in “Programs” nor in “Documents and Settings” (apart from “Temp”), the registry cleaner didn’t come up with any obvious keys, no left-over drivers in Non-PnP. Not really astonishing, this is a clean fresh WinXP-install on a completely new PC.
Installed CIS again (see driver list below), network stopped working. When activating the network device, it tries to get the IP address via DHCP, but doesn’t send out any packets and finally runs into a timeout. Tried to disable various network-related devices, no good. Uninstalled CIS, network device works again. Windows firewall is disabled, btw.
Are there newer drivers for your network adapter? Do you have a spare PCI network card for testing? Slot it in and see if the same thing happens or not. May be there is a driver issue with the NVIDIA network adapter.
Update: I installed an old 3Com-based ethernet card, same symptoms: I get a normal network-connection without CIS installed, but when CIS is installed, the network stack hangs when getting the address via DHCP. Uninstalled CIS and it works again.
I noticed something else that might help in finding the bug: when CIS is installed, the latest Firefox will not come up but simply hang. Internet Explorer does come up and tells that there is no network connection. This only depends on if CIS is installed or not, when CIS is installed and the network interface is deactivated, Firefox hangs before showing the GUI, without CIS, Firefox comes up and correctly cannot get a network connection.
BTW, is there a previous version of CIS available? I’d like to try latest 3.0.x version and see if the problem predates 3.5.x.
no other security-applications, the install happened on a fresh winXP system with sp3, no special settings in windows en- or disabled (because I figure that CIS must be able to handle that).
what about a previous version of CIS? I’d like to try CIS 3.0.x and see if that works…
I tried the new v3.8.x, still the same symptoms. Another note: when I start firefox and it hangs, it cannot be terminated via task-manager, so this looks like some deep problem…
ok, I found a download link by searching for “released” in the forum. sorry to report that version 3.0.25 also shows this behaviour. I’ll try a v2.x next…