I posted separately about MSFS never (or at least not until I give up waiting) finishing the startup process, when the Installation Manager doesn’t even appear for checking for updates. This happens every first time I start MSFS. I have to close and restart and then it proceeds normally (about 5 minutes to main page). I also use MS Addons Linker to start, but it is the same just clicking on the desktop MSFS icon/button. I have a very robust PC build.