After Windows start Avast didnt start.
So i tried to start it manually but after opening avast it disappeared again 2/3sec afterwards.
I restarted my pc to check if the problem still remains and the problem was still there 
Idk if this issue is connected to the following one.
Few days prior to this i couldn’t update my avast virus definition.
My PC notified me that there was an update available but when i opened avast to update the virus definition it told me it was up to date.
This also happens to my graphic card adapter. It shows me everytime that there is a new update available even though i already installed that update.