PSA: found a fix for Armoury Crate not displaying any available devices and aura sync just not working in general
I was having issues with the armoury crate not working AT ALL and Asus aura program giving me a startup error too. I've seen issues for this all over the place and finding a fix was difficult, but basically my motherboard aura sync control was not working at all. Reinstalling windows did not fix it either so don't do this unless you know for sure it's a software issue!
It turns out that aura sync accesses profiles on a chip on the motherboard and I had corrupted the file by messing around with both the aura program and the armoury crate at the same time (use one, NOT BOTH!!). To fix it I followed this post exactly and it worked perfectly! If this works for you in the future just remember to be careful because Asus aura is controlled with motherboard firmware in a windows environment so fixing it isn't as simple as just reinstalling the program if it doesn't work anymore.
"I went to C:\Program Files (x86)\LightingService after uninstalling the lighting service component and found a 3kb file called LastProfile.xml. I deleted it. I then went to the registry to HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\ and deleted the LightingService subdirectory.
Same at HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\ (deleted the lightingservice folder)
I reinstalled just the lightingservice component and then rebooted, and sh...it just started working. Try it out. I don't know if it's related, but I also updated my AMD radeon driver to 19.7.5 by downloading from the amd website and choosing "Clean Install"."