I too am experiencing avira antivirus no longer updating. It goes on fine for four weeks and then simply stops. This has been going on for a while now. The only solution is to uninstall it, download the latest version and install it clean every four weeks.
I do not see the "repair" option with the free version, so a clean installation is the only option.
Does anyone know what is the cause and how to fix it?
My OS is Win 10.
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