so the master chief collection wont work

The menu looks fun but when you want too join a game or start a campaign it says “(insert halo game here} has not been installed” I reinstalled it and uninstalled it checked the dlc halos they were all installed but it doesnt seem too detect it.

There’s a long thread on this issue on here.

Try these

Go to Start > Settings > Apps > Select the app “Gaming Services” > advanced options > Reset > then Repair
Can also try the same thing with the Microsoft Store app