AntiVir Free update problem
Sometimes Avira AntiVir's free version has trouble in updating from heavy traffic on the servers. When you install AntiVir, it has a preset time-out limit that may fail from high server load.
This error is represented in the events update log as being:
[UPDLIB] [ERROR] Download manager: An error occurred inside the WinINet library.
If this happens, you can either manually update, or run this command via Windows Start -> Run
"C:\Program Files\Avira\AntiVir Desktop\update.exe" /DM="0" /NOMESSAGEBOX /receivetimeout=120