Hello John, I have read carefully of your above suggestion on how to run FSUIPC auto start.
My FSUIPC is not in a protected folder,
admin privileges on MSFS and FSUIPC,
the EXE.xml file has only FSUIPC as Lauch.Addon,
SimBase.Document is in the EXE.xml,
I have completely delete Steam from windows,
I can manually run fsuipc. But when I tried to run MSFS after fsuipc, msfs will not run, also fsuipc will also close down.
reinstall MSFS and FSUIPC.
It will successfully auto launch once. After that I think FSUIPC can auto launch MSFS but only for a few second then it disappear completely. I disconnected all the monitor to make sure it is not hiding in one.
I understand that you have spent a lot of time to tell us what to do and it is all written on on the above paragraph. I hope that you have spotted anything that I have not done properly. Thanks.