Playing Offline

I know I’ve seen a couple topics on this and I can get it to play offline, but only if i connect to internet first. With my work I go about 1 month without internet and I had an Xbox were everything worked fine as far a forza goes offline. I recently got a PC so its easier to take with me to game while out and I cant get Forza to play offline unless I connect to internet first. As soon as I turn off my pc and turn it back on and try to open it, it tells me to connect to internet. Any solutions or is that just how it works?