Connecting To A Server

Connecting client to server

Using the launcher select Change Ip Address

Enter the ip of choice and press ok

Change_IP_Address

Then press Online

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Connect To A Server Manually

Open the file project-bo4.json in your Black ops 4 installation directory, At the lines:

"demonware": {
    "ipv4": "127.0.0.1"
}

Replace "127.0.0.1" or whatever value you have with the server IP address.