Windows 11: Settings → Apps → Default apps → Google Chrome → Set default
Windows 10: Settings → Apps → Default apps → Google Chrome → Set as default
macOS (Chrome): Apple menu () → System Settings → Desktop & Dock → Default web browser → select Google Chrome
macOS (Safari): Apple menu () → System Settings → Desktop & Dock → Default web browser → select Safari (if needed)
iPhone (iOS): Settings → Chrome → Default Browser App → select Chrome
Android (Chrome): Open Chrome → tap More (three dots) → Settings → Default browser → set to Chrome
Android (Samsung/other): Settings → Apps → Default apps → Browser app → select Chrome