UPDATE: FIXED!!! 05/11/2018
Original Post:
Thank you. This was helpful and worked for us, too, on a Windows 7 system. Something else happened, however, after upgrading Arturia Collection 6. The NI Komplete Kontrol Keyboard S49 MKII no longer seems to function with the Komplete Kontrol software as it did previously. Sound does come out of the keyboard, responsive to settings within Komplete Kontrol computer screen interface, but on the hardware keyboard device, almost all buttons including "BROWSE" are off, and the hardware keyboard screens just display KOMPLETE Kontrol. Also noticed
1) In the top menu of Komplete Kontrol, under Controller, nothing comes up highlighted
2) In preferences dialog of Komplete Kontrol, under Hardware, nothing comes up (in NI documentation, hardware isn't even shown in screenshots)
3) In preferences dialog of Komplete Kontrol, under MIDI, the Kontroller MK2 does show up and is checked for INPUT
We verified running Komplete Kontrol in Admin mode, and the latest drivers and software and firmware.
It's sad to lose all that "integration". Hope to get it back.
Saw another post on forum so tried a forced rescan to see if it could help...
https://forum.arturia.com/index.php?topic=92727.0#msg149123Unfortunately, that didn't work, neither did uninstalling, reinstalling drivers and software, nor switching USB ports, nor in the DAW. Verified drivers, software and firmware latest up to date. Still puzzled.
No response from NI since this happened; customer support numbers are disconnected/down; waiting on email support ticket.
For some reason Komplete Kontrol says Piano V2 plugin failed but others work inside the software without issue. Piano V2 standalone works fine.
Tried removing registry stuff, then reinstall, no luck.
Found an NI uninstall registry tool:
https://support.native-instruments.com/hc/en-us/article_attachments/115005228309/NI_Uninstall_RegTool_64bit.zip---
UPDATES:
Fixed! Recovered Functionality.
After testing on a "virgin" Windows 7 system by installing NI FM8 + NI Kontrol Keyboard S49 MK2 Driver + NI Komplete Kontrol Software and having positive results with full functionality we confirmed the issue was configuration, not defective hardware.
We noticed a few differences in the setup/install process and took photos to document those differences (versus our "studio" Windows 7 system where it wasn't working).
We discovered that there were 2 services that needed to be running in Windows (Computer -> Manage -> Services and Applications):
1) NIHardwareService (c:\program files\common files\native instruments\hardware\NIHardwareService.exe) with Start= Auto
2) NIHostIntegrationAgent (c:\program files\common files\native instruments\hardware\NIHostIntegrationAgent.exe) with Start= Auto
Those were missing despite numerous attempts to (re)install software, drivers, etc.
To install the services we had to use a command prompt - run as administrator; we downloaded and installed svcstart.exe from
http://www.rozanski.org.uk/software.
We issued a command:
SC CREATE NIHostIntegrationAgent Displayname= "NIHostIntegrationAgent" binpath= "c:\program files\common files\native instruments\hardware\NIHostIntegrationAgent.exe" start= auto
When it worked, we got a message of SUCCESS. It took us a few times to get it right after trying with INI files, but we checked services via msconfig and computer->Manage->Services and Applications. We found it made it into services and applications. We started the service. Then we rebooted/restarted the computer. Immediately the differences were obvious upon the next startup with extra lights. When we ran Komplete Kontrol at that point, in the Controller Menu the device appeared. We set things in preferences. We loaded an instrument. Everything was beautiful again, integrated at long last. Notably, there was one thing different in Komplete Kontrol not yet figured out... there is a Hardware Tab in preferences on the "virgin" machine whereas there is none on the "studio" machine. Maybe that will come back with Komplete Kontrol's next version due later this month.
NI sent an email response to our inquiry submitted by web after ~48hrs asking for more information such as photos, and sending links to pages we already visited trying to troubleshoot. Will update them with the explanation.
Hope this helps others.