I am able to launch the game from steam like normal, but once I get in, press enter, and it says “let’s get you signed in” then has the button labeled “sign in” I click the button but it is not functional, like I can still click the x button to back out but I can’t press sign in for some reason… pls help
I have this problem as well, did u ever figure it out?
I’m having the same issue. Neither the mouse, nor the controller will press the “Sign in” button. Very frustrating!
I figured out the issue for me.
It turns out that my resolution setting was set to its lowest setting even though it was actually displaying at 1080p, causing my mouse clicks to be offset from its visible location on the screen. I was able to figure this out by launching the live version of MCC on PC (non-flight) and navigate to the menus using arrows keys and offset mouse clicks. After changing the resolution setting to 1080p, I relaunched MCC Halo 3 Flight and was able to click the Sign in button (because the settings sync between games, I believe). You can probably change the resolution in the configuration files, too.
PickleBitz’s solution worked for me as well. I discovered the problem happened for me when I changed to a different monitor with a different native resolution. MMC doesn’t auto change the game resolution. You can move back to the other monitor to adjust the settings before changing them or just drag your mouse until things get highlighted hen tab to the sign in button.