Avira shows error while trying to open the program

Hello there,
When I turned on my PC this error appeared on my desktop. I think it was created by my antivirus and I don’t know how to solve it. It appears every time I open my PC and the reinstall is not helping. Any solution for this error ? How can I solve this ?
Thank you !

Avscan.exe – Toepassingsfout
Er is een uitzondering opgetreden(unknown software exception)
(0xc0000409) in de toepassing op de locatie 0x734d276e.
Klick op OK als u het programa wilt beeindigen.
