Fix empty Windows 11 Security or Defender App

[amirr]

 

[Brahman]

Its always a good practice to start fresh rather than upgrading from an existing os, whenever there is a major change in os is present. You might never know what went wrong and it will be a tedious task to find out the erring application from the old os. With most people having an ssd /nvme drive you can finish the complete reinstall in an hour or so which will save you from pulling your hair later.