ESET NOD2 Antivirus 4.0.437.0 Virus Sig Database: 4903 (20100228 ) Windows XP with latest updates and SPs I've had this problem since version 3 of ESET NOD32 AV, but was annoyed to see that it's still happening in version 4. The problem is that whenever the AV tries to auto-update, it gives me the "Update failed, invalid username/pass" error. But, if I open the console and click to manually update, it works fine. It's annoying because it won't update and the error message tab will pop up at inopportune times (during full-screen videos, games, etc.) I initially had version 3 (can't remember exact number) via the trial, and then I bought a license. After getting the auto-update problem I reinstalled cleanly. I just updated my expired license and freshly installed version 4 with my new login/pass. Same error every time.