Please unload GVCIDrv64.sys before starting the game

I was getting the above error when trying to launch Halo MCC.

What did work for me:

Uninstalled 'RGB Fusion'

What didn't work for me:

Renaming 'GVCIDrv64.sys' to 'GVCIDrv64.sys.old' within 'C:\Windows\System32\drivers'.

Changing display settings for Halo MCC within Nvidia settings (had extremely low hopes for this, but one person said it worked for them).