$Windows.~BT folder delete solution

                                                                                                                                                                                         The win10 must not be handcuffed, in case the key $Windows.~BT folder is deleted, or it is deleted by a 360XX guardian, the background upgrade preparation is ready to stop. This is a depressing thing. Here Xiaobian gives a solution, delete the $Windows.~BT folder and re-download it.

$Windows.~BT Folder Delete Solution
Recall Task Manager - Service Tab, right click "wudfsvc", select restart, then push will re-download

Xiaobian can only help here, and can't guarantee that everyone's problems can be solved. La la la, go play win10.