Hi, I have a rather large and somewhat old desktop (unmanaged c++) app that I've ported to the Raspberry Pi with the exception of ANT support. It's not really feasible to rewrite the app in c# so I'd gone down the path of putting together a wrapper for the UWP dll. Using the desktop ANT_NET.dll on the desktop as a stand-in (since if I understand correctly the interface is the same) I was able to get it working fairly easily. But in the porting to the PI I've run into a bunch of issues... my first wrapper was c++/cli which I didn't realized is completely unsupported on the PI. Then based on MS support's suggestion I went with a c# COM wrapper which again wouldn't work once I ported it (no regasm on the PI and adding the keys manually doesn't work). Lastly (and again based on MS's recommendation) I went with an "unregistered side-by-side COM" approach. Again, works fine on the desktop not on the PI. If the PI had the same tools available (sxstrace, procmon, etc.) I could probably work out what's going on but without these tools I'm shooting in the dark. Anyway, I'm wondering if any of the devs that put together the PI's UWP dll might have any suggestions. I'm assuming you've gone through a bit of this already while doing your port. And again, it may be that it's just not possible. As it stands the COM stuff fails on it's own before I even have had a chance to load up the ANT_NET_UWP.dll so for all I know at this point it's just not a supported scenario. At any rate any input/suggestions you might have would be appreciated. We've got BT/LE support working already and I'd really like to add ANT as well if at all possible. Thx, Chris