UPDATE: Wobbles (InputMapper dev) has looked into the issue and has just posted this:
Just a heads up to people who need to use Exclusive Mode (most games need this option) in InoutMapper, DS4Windows, etc, but the option is currently not working on the latest Windows 10 update (it will say the program can't access your DS4 exclusively, even if no other programs are running).
This has been a known issue for the past few months on Windows Insider builds, but now that the Anniversary Update is live it seems to have still not been rectified.
Windows 10 Version 1607 is in fact NOT compatible with exclusive mode.
Microsoft Windows 10's recent update, version 1607 dubbed the Anniversary Update, will break InputMapper's ability to connect to the controller exclusively which is required by some games.
I have not found a workaround as of yet and it is doubtful that one exists. So until a solution is found, it is important that users needing exclusive mode disable Windows updates temporarily. You can see how to defer windows update by reading this link: http://www.thewindowsclub.com/defer-...-in-windows-10
I have posted to Microsoft regarding the issue Link . Please click "Me Too" link to help raise awareness.
As of update 1607, kernel32.dll CreateFile() using only the flags GENERIC_READ and GENERIC_WRITE and 0 for dwShareMode no longer allow exclusive (non shared) access to devices needed in some circumstances.
An example of a device that is not allowing exclusive access any more is the Sony Dualshock 4 Game controller.
Just a heads up to people who need to use Exclusive Mode (most games need this option) in InoutMapper, DS4Windows, etc, but the option is currently not working on the latest Windows 10 update (it will say the program can't access your DS4 exclusively, even if no other programs are running).
This has been a known issue for the past few months on Windows Insider builds, but now that the Anniversary Update is live it seems to have still not been rectified.