Resolving Cloudflare WARP CF_DNS_PROXY_FAILURE on macOS

Cloudflare offers documentation on this error. Consult their official resource first:

https://developers.cloudflare.com/cloudflare-one/connections/connect-devices/warp/troubleshooting/client-errors/#cf_dns_proxy_failure

If the issue persists, try these steps:

1. Navigate to System Settings > General > Login Items.
2. Disable "Allow in the Background" for all items except Cloudflare apps.
3. Restart your Mac.

If this resolves the problem, a background app is likely the cause. Identify the specific app using a binary search method.