Try the last link on this page to download Windows 10 ADK:

https://msdn.microsoft.com/en-us/windows/hardware/dn913721.aspx

The adksetup.exe properly references Windows 10 and sets up...

Try the following as your batch file:


start /b "" "c:\util\Game controllers - Enable.cmd"
start /wait "" "P:\Program Files (x86)\Lockheed Martin\Prepar3D v2\Prepar3D.exe"
start /b ""...

The start command on line 2 treats your path in quotes as a window title only.
Add the /d switch to declare the path first then call the executable.


start /d "P:\Program Files (x86)\Lockheed...

I wouldn't recommend this, so much functionality is now lost. What does work is the search at the top right of Explorer windows - intermittently.
No more Windows Key + F
etc.

So this appears to destabilize the OS in minor ways, but most likely in additionally messed up ways that won't be noticeable until you go to use a different feature down the line. Fun experiment...