Sorry i read only now.
I gave user all privileges to program folder C:\Program Files\Calibre2 and user folder C:\Users\<user_folder> (which already had) but it's no use. I run the program as administrator and give admin PIN everytime.
Maybe it's worth noting one thing: I called "Jhon Doe" the admin, i used an email that starts with "andre" my old standard user is called "andrea". The andrea user already had a user folder in path "C:\Users\andre" . I read windows give the folder name the first 5 letters of username. At the creation of admin "Jhon Doe" its folder has been called "andre.DESKTOP-9ONOB31" . I think to differentiate with the already existent "andre".
Today i used this method
https://support.microsoft.com/en-us/...4-9adf9f8a6358
to change admin name. i noticed it was not Jhon Doe but equal to the Microsoft email. I changed it to "Jhon"
So it's a bit confusing but anything i did had not effect.
Here the screen. sorry for italian UI.
https://photos.onedrive.com/share/52...photo&e=aYKstc