The exact cause of this issue remains unclear, whether it's due to Avira's server malfunction or a transmission problem from the manufacturer. Nonetheless, there are ways to tackle this situation. Follow the instructions in the following article to help Avira Free AntiVirus operate normally again.
Fixing Avira's Update Error
For optimal support, users should download and install the latest version of Avira Free Antivirus. Download it here: Avira
Method 1: Resetting Settings in Avira Free Antivirus and Editing the Host File.
Step 1: After installing Avira, launch the software. Click on Extras --> Configuration (or use the shortcut key F8) on the toolbar.
Step 2: In the
In the right-hand pane, under the System Protect feature, disable 'Protect Windows host file from changes'
Click OK to save the settings
Step 4: Edit the Host file
Open the Host file with Notepad (instructions for opening the Host file are provided in the article). Copy the 4 lines below to the end of the Host file and save it.
2a01:138:a001:201::21 personal.avira-update.com
2a01:138:a001:201::21 personal.avira-update.net
::1 personal.avira-update.com
::1 personal.avira-update.net
Method 2: Apart from editing the Host file, you can also intervene by changing the DNS of your computer system.
Step 1: Click on the Internet icon in the system tray, then click Open Network and Sharing Center
Step 2: In the Connect or disconnect ---> Click Local Connection section
Step 3: Click Properties --> Internet Protocol Version 4 (TCP/IPv4) --> Properties
Select the General tab, under the Use the following DNS server address function, modify the DNS
Preferred DNS server : Enter 198.153.192.1
Alternate DNS server : Enter 198.153.194.1
Click OK to save the settings.
After completing all the steps of either of the 2 methods above, restart Avira Free AntiVirus and try the Update function. This will allow you to easily update to the latest versions of Avira Free AntiVirus with upgraded features to ensure the safety of your computer.