Rene, we request you to try the installation using offline installer which is available in this https://www.avg.com/download.prd-gsr-free website as 32/64 bit.
Have you run both AVG remover and Clear tool as mentioned in this article: http://support.avg.com/SupportArticleView?urlname=How-to-troubleshoot-issues-after-upgrade-to-the-latest-AVG-antivirus-product ?
I have changed the DNS yet the issue remains the same. Please see the screenshot.
Hello Rene,
We will check this for you.
Please change DNS settings on your computer to "Google DNS" and check if that fix the update issue.
Follow the steps from this link https://support.avg.com/SupportArticleView?l=en&urlname=Changing-your-DNS-settings-when-AVG-Secure-VPN-cannot-establish-an-internet-connection and check if that fix the issue.
Why can't I update AVG definition? The following message is displayed :
Last encountered error: Invalid file signature. Set up will terminate.
Hello Rene,
We will check this for you.
Please change DNS settings on your computer to "Google DNS" and check if that fix the update issue.
Follow the steps from this link https://support.avg.com/SupportArticleView?l=en&urlname=Changing-your-DNS-settings-when-AVG-Secure-VPN-cannot-establish-an-internet-connection and check if that fix the issue.
I have changed the DNS yet the issue remains the same. Please see the screenshot.
Thank you for the info, Rene.
We appreciate your efforts. Let's repair http://support.avg.com/SupportArticleView?urlname=How-to-repair-AVG your AVG Antivirus free and check with the situation.
If the issue persists, uninstall
http://support.avg.com/SupportArticleView?urlname=How-to-troubleshoot-issues-after-upgrade-to-the-latest-AVG-antivirus-product it using AVG Clear and reinstall it as suggested here: http://support.avg.com/SupportArticleView?urlname=Download-and-install-AVG-AntiVirus-Free