Not sure what has been going on with your updates but if you check Speccy you will see that the last update shown to have been installed was in February of this year.
2/10/2021 2021-02 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 2004 for x64 (KB4601050)
Long shot but try doing a reset in the recovery options, see info here I would choose the remove everything option, then update to version 20H2 before reinstalling Photoshop etc.
Whatever you do, do not reinstall Avast once you have got this sorted, as to why explained below;
Avast is no longer widely recommended by any forum as it has become a monster, it foists all sorts of stuff on folk without them knowing and causes various problems by installing browser plug ins that cause conflicts etc, it can also be a nightmare to uninstall as it leaves traces here there and everywhere if you are not careful, you don`t need any third party AV or Firewall as Windows own Defender and Firewall are more than up to the task of protecting your computer, they were also found to be passing on users info to marketers through a subsidiary named Jumpshot.