Reader Asks Why His Firewall Won't Stay On After Boot
Q: About 5 times during every startup in Windows XP, I get the pop-up balloon that says my firewall is off. Usually I just turn it back on. Now when I go to control panel I’m unable to turn it on via the Firewall icon (asks me if I want to activate ICS, I say yes and it won’t load it) or via Security Center. Any ideas? 
A: It is not terribly alarming to see the balloon message once, briefly, during the XP startup– but it should resolve itself quickly and automatically (it has to do with the order in which things load). You should not have to go in and turn it on each time. You set XP to use the firewall (or not) one time.
Without looking at your machine, please understand I can only give you general answers: firewall behavior such as you described is typically caused by two things– a malware infection which is disabling the firewall so that it can accomplish its nefarious goals; and/or corrupted Windows system files.
(If your machine is taking a really long time to start, this can also be a clue that you are infected and/or it can also mean you have too many programs loading at boot. You might want to read, http://techpaul.wordpress.com/2007/10/26/speed-up-your-startup-a-repost/)
You want to try to make certain you’re free of infection, and I have written many articles on removing malware, http://techpaul.wordpress.com/2008/09/02/malware-removal-techniques/ and also How To Cure A Malware Infection.
Modern malware is nasty stuff, and there’s no guarantees (short of reinstalling Windows), but here are some generic and general tips:
* Start by surfing to Trend Micro’s Housecall and run an online scan of your machine (I suggest using the “try the new version” link).
* Make sure your antivirus hasn’t “expired” and is updated with the latest definitions.
* Download and install the free version of Spyware Doctor from the Google Pack and run it twice– a Full/Deep, and then a “quick/Intelligent.
Once you have all clean scans– if you still have the same problem, it is probably corrupted files (or, your infection is a bad one). You may need an XP Install disc (you may be able to use the disc that came with your computer, even if it isn’t an official Microsoft disc) for these next steps.
* Open a command prompt, Start >Programs >Accessories >Command Prompt, and launch the System File Checker by typing in sfc /scannow. Insert the disc when/if prompted (and close any windows that open.. you don’t want to run Setup, or launch a recovery).
* 99.9% of everybody has no use for ICS (Internet Connection Sharing) and you do not want this "enabled".
* As much as I recommend having a firewall, I must also say XP’s firewall is not all that great. Please look at http://techpaul.wordpress.com/2008/04/22/about-firewalls/
Please note: Since this behavior is usually indicative of real problems, it is not a bad idea to have a qualified PC repair technician have a look at your system.
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* Originally published 9/08/08
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