Packaging/Cooking fails

Just trying to go through the process of packing/cooking a project. I get an error:
UE5_PackageError
Does this just mean I’m missing dot net or something?

There’s no Launch On menu that I can find and when I check my system in the Platforms - Windows menus, I see an ! by my system’s name, but if I try to update device, I get the error "Installing Sdk failed! and then a pop up telling me to restart the editor.