I didn't have problems with the updater til upgrading to version nine, which seems to have a bug.I didn't find anyone with the exact same problem as me--which was that the updater was telling me I was up to date because there were no updates to be had when it checked, which wasn't true, and the notifier was buggin me to update because the status showed I was behind on updates--but the reinstall fixed it.Safe mode would be something else to try tho if needed. Likely unrelated to the issue, but Avira has had problem with overloaded servers past day or two, so the updates take very long to come in.Yesterday it tried connecting to several update servers for about 10 minutes. Yes, probably unrelated since the original post is kind of old. OK, so I recently encountered some problems with Avira Anti Vir: the VDs just wouldn't update! However, I specifically reinstalled my entire security apparata afterward to make sure it recognized the new setup. It isn't the firewall; there are no block alerts, no popups asking me to block or allow the AV to download. It can only be updated manually by downloading its definition files. If that doesn't help I would look into two things, an infection or a problem with your firewall. Afraid of a glitch or something, I uninstalled Antivir and tried Comodo's IS suite. Now, I recently did change my DNS server IPs, coz the old IPs were pinging false. I try also installing some anti-spyware but still cannot update thru internet automatically.But it's solution is still a good idea--schedule updates when server traffic is low in Germany/Europe.I have mine set for 9 PM Central time (GMT -6), which is about 3 AM in Germany, and have not had a problem with crowded servers.
Please check your internet connection and try again.' This on a 24/7 broadband connection with 2 mb/s speed. I tried using hijackthis by trendmicro, it sees that mcafee still running in service but i have already uninstalled it.
Actually they will ask you to do a manual uninstall in safe mode, linking to this knowledge base article:
id=135I didn't go into safe mode, just did a normal uninstall, ran the registrycleanup from their page and then reinstalled.
If you can't replace your HOSTS file, it means that the malware has protected that file so you can't change it.
Follow the instructions on the bleepingcomputer page I mentioned; they tell you how to deal with that.
Today, I DLed and installed PC Tools' Antivirus, but it told me the same damn thing again: 'The virus database could not be downloaded.