Hi, Eli Sterken
This issue you are facing does not indicate any specific reason why you are facing it. However, you can get this issue if the Avast One installer is corrupt or is not downloaded properlly. You can try solutions to check the system compatibility, download the installer from the official website, check the network connection, run the installer as administrator, and more. Apart from that, looking for additional help or connecting to Avast customer care can also be a good idea.