Hi guys, love this thread! Mind boggling and trying to learn from it! Sorry to rehash all over again but I have a similar issue and maybe can get some help. Have the original FSX 2 disk Deluxe installed for over 16 years and everything started when I purchased AS16. My issue is that both programs, FSX and AS16 install fine but once AS16 sees my FSX, constantly refers to not having the correct simconnect installed and to use the one in SP2/Xpack which is no where to be found! Got to rhe point where, yesterday, I installed FSX, followed all the correct steps, used a registry cleaner, got everything out and reinstalled FSX, SP1 and SP2 and reinstalled AS16 and still get the same issues. One is the simconnect and anither has to do with the asv, think that was it. Been speaking with HIFI for over a week and seem to be getting no where with them and running around in circles. FSX works fine and AS16 installs fine, AS sees the FSX, it's when I start to fly I get both errors. On an orginal PC which came with Windows 10 and I upgraded to Windows 11 if that means anything. As nentioned, FSX has worked fine for me for 16 years and runs everything EXCEPT for AS16! It's driving me nuts!! Any suggestions? Thanks, Steve