I installed Halo 5 forge for pc from the windows store today and when it prompts me to sign in, I press the button a blank pop up window (I’m guessing the sign in should be in it) appears for a second and dissapears, same thing happens when I try to log into the halo and the xbox app.
Kinda odd for software to be made where you can’t even try to type in login details.
Figured it out, you need a certain 3 of the for xbox services enabled in msconfig to even log in.