So I currently have the same issue. I am on a 1 year old Lenovo Laptop.
After a windows reset, I am missing the Microsoft store app. I am also missing other Microsoft apps like sticky notes and the calculator among others...
I tried doing a second Windows Reset and it did not work. My windows is up to date. I tried using the PowerShell as admin with this command I copied from this very forum:
I paste it, hit enter and nothing happens. I tried restarting the computer after entering this command and nothing...
Does someone have an idea of what to try next...