Avira is not updating
Keep in mind that this should work for all versions of Avira - Free, Premium or Security Suite.
It has been tested on several Windows versions such as 7.
Use your favorite archive software and extract the files in the same folder.
A new window will appear and it will ask you where do you want to save the ivdf_fusebundle_nt_file on your computer.
Once you do that you should have the original file and a new folder that contains a couple of files.