originally posted by trdpatrick
XB Game Pass version and I'm getting the "failed" error when activating the trainer. Tried the included launcher shortcut from the trainer zip and "Halo:MCC Anti-Cheat Disabled (Mods and Limited Services)" shortcut. Disabled MS Defender AV and FW and launched both Halo and trainer as local admin.
19:55:58: Failed attaching to process. Very likely the game is protected by anticheat software. Please check out the trainer notes to see if there are any special instructions.
EAC is likely still running. You have to run the game with EAC disabled. Ask Caliber to make a video on how to do this manually if the included shortcut is not working for you.