Thanks for your suggestions. I always knock off the anti virus during installation, just in case.
I previously got inventor running (although it always crashed opening a new file on the homepage, but not using the pulldown file menu) and I managed to get mechanical autocad running... but it was the cnc machining addon that works inside of inventor that wasnt picking up the bypass/licence via use of the patcher (I also tried it manually via other instructions, but it did not seem to work).
This is why I suspect theres some kind of limitation or problem with the patcher, not registering the addons inside of other programs already patched.
So do you think the 2022 patcher by xforce will work for the 2023 products? Thats interesting, if so, so I could try that.Cheers.