1. Create a folder in C: called Scratch. (The [C:\Scratch] folder will serve as memory using your hard drive for a Dism.exe installation.)
2. Create another folder called Update in C:.(The [C:\Update folder will house the KB downloaded from Update Catalog].)
3. Download the KB from the Windows Update Catalog to the Update Folder. Hint: Navigate to the C:\Update\ folder and rename that very long name to KB4015217.msu by backing out all of the GUI. It will save the fingers and typos later on.
4. In the lower left corner, left click the Flying Window logo and select the Settings Icon (looks like a snow flake to me.) When the Settings window comes up, click on Update and Security > Recovery and select Restart Now under the Advanced Startup heading.
The computer will reboot into the Advanced Startup Menu. Navigate to the option that allows you to run a Command Prompt. (Troubleshoot > Advanced Options > Command Prompt). The computer will reboot once again and you should see the familiar Command Prompt
When the X: Command prompt appears, type the following:
[Don't mess up! Nothing will happen, but it won't run either! Space is Important because the space is a delimiter for each Dism.exe command switch. Also proper use of forward and back slash is important.
The forward slash starts a DISM command, and of course, the backslash is for Folders. Below, the only spaces are spelled out by (space).