Connecting To A Server

Connecting client to server

Using the launcher select Change IP Address

Enter the IP of choice and press OK

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",
    "serverlist": "127.0.0.1:8080"
},

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