"Sufficient privileges"

Did you solve your problem ? I'm having a same issue but nothing worked so far.

I also get this when I get connected

I've never seen such an error on FH4, have you checked your NAT? Is this mp error only in the forza?

Hello everyone,

Thank you all for posting on the Xbox forums. We will be locking this thread due to it being revived by a new post. If there are any questions, discussions or issues that anyone would like to bring to our attention, please create a new thread. We will
be more than happy to answer any questions or provide solutions for any issues. Thank you all again and happy gaming!

I got this problem recently too, can get into the auction house, view things in the livery, everything that actually does require you to be online, but couldn't join a session nor co-op games (3 days ago : 20/June/2020) I kinda waited around to see if something
would work itself out. It didn't... I noticed I had errors in my Microsoft Store updater and also in my Windows 10 Security update which gave me : Error 0x80070424.

Researching that code took me to this website and a simple Windows Registry Edit fix: https://www.winhelponline.com/blog/error-0x80070424-windows-update-and-microsoft-store/

Once I complete those few steps, restarted the PC, then went back to Windows Update (Was able to successfully update this time) and then to Microsoft Store (where I previously had 4 different errors: one for a DirectX update, and 3 for Visual C++ errors)
after that registry fix, those errors were gone and this time I had 4 new updates (Minecraft, Skype, Forza, and Windows Camera Update). All four of those successfully updated and installed and when I went into Forza... hooray!!! I can now get onto online game
play.

This solved my problem - hope it's the same and can solve yours and anyone else that finds this.

Hey, I'm having the same problem. Did you try reinstalling it? I wanna know if that worked for anyone