There is an ongoing "thing" with Free AVG and failing updates. Try again or later, again and it may update. Some don't like this and should try another AV.
Another owner had bigger problems. Their OS was "cracked" and the "crack" affected such updates. There wasn't much we could do for them.
Running Windows XP and have gotten a virus I can't seem to shake. I can run a few anti-virus programs but if they ask me for updates the system tells me that it can't find an internet connection to update the definition files. The virus won't let me go to a few websites...avg.com or certain pc help sites. This one it didn't catch, however. I've tried copying the downloads from another computer and I'm able to install but most won't run without running the updates and then I'm back to square one. I almost need a program that is current as possible so that I can clean-up this right away without any updates. Any suggestions???