Are you running PiHole, Adguard or similar and using macOS? On macOS, Chrome treats 0.0.0.0 as a local address which results in these prompts. Switching to havi

Are you running PiHole, Adguard or similar and using macOS? On macOS, Chrome treats 0.0.0.0 as a local address which results in these prompts. Switching to having blocked domains return NXDOMAIN can work around the issue.