Windows XP - Windows 7 actively check to see if you have known security software installed and will alert you if such is not detected. Some, including MBAM and SAS, are not included on that list, so it may incorrectly alert you that you are unprotected, but the alerts can be disabled in the Security Center section of the Control Panel.
There are, however, many rogue/scareware applications that will alert you that you are unprotected, your computer is infected with XX viruses, and that you need to purchase their product immediately to resolve the issues. MBAM and SAS should detect such, but you can uninstall any that are overlooked through the Control Panel and disable them through MSConfig.
Recently I found out about a virus that says you have a security problem and tries to force you to buy their products. I installed Malwarebytes and Super Anti Spyware just to be safe.
Yet, every time I start up the computer I get a notification saying to check my anti virus software status because the anti virus software may not be installed. But, my anti virus software already booted up long before this security popup. And when I check the security centre, everything is working fine.
There's no annoying popups, no attempts to hard sell anti virus software. Is this just an idiot moment on my computer's part, or is this actually a harmless yet unbelievably annoying virus. I know it might be overreaction, but I'd like to get to the bottom of this, since it just randomly started happening.