Hi all, I have a problem since some days : Windows show me an error that I don't have any antivirus software (find attached a screen shot of the Security Window... sorry it's in French). As I see this problem, I uninstall the 4.0 version and install the 4.2 version. But the problem is still there... and I have an other problem : errors messages on start up and antivirus and antispyware are disabled (see post : https://www.wilderssecurity.com/showthread.php?t=270012). Perhaps the 2 problems are linked but I don't think so. Because the 4.0 version become to be not recognized and I have no error messages... The configuration of my XP sp3 didn't changed. I just make all updates frequently. Did Msoft do a stupid update which make this trouble? Did some one have the same problem and perhaps a solution? ESS : before 4.0 and now 22.214.171.124 OS : Windows XP sp3 Best regards from France, Seb.