On the Mac we checked (macOS 26.5, October 29, 2026) there is no process called wifid: Wi-Fi ran in airportd, with WiFiAgent behind the Wi-Fi menu and wifip2pd and wifianalyticsd beside them. If a process named wifid runs on your Mac, check its path with 'ps -axo pid,comm | grep -i wifid' in Terminal; Apple's own daemons run from /System or /usr, not from your home folder.
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One Mac, macOS 26.5 (25F71) on Apple silicon, read with ps and codesign on October 29, 2026
| Path | None to show |
|---|---|
| Note | No wifid program or launchd job on macOS 26.5. Wi-Fi ran in /usr/libexec/airportd (root) and /System/Library/CoreServices/WiFiAgent.app/Contents/MacOS/WiFiAgent (your user account), with /usr/libexec/wifip2pd and /usr/libexec/wifianalyticsd (root). |
Many guides describe wifid as the Mac's Wi-Fi management daemon. On a Mac running macOS 26.5 (checked October 29, 2026) there was no wifid program or launchd job: Wi-Fi ran in airportd as root, the Wi-Fi menu in WiFiAgent for the logged-in user, with two more Wi-Fi daemons, wifip2pd and wifianalyticsd, beside them. The Wi-Fi fixes below apply whichever process handles Wi-Fi on your version of macOS.
Wi-Fi dropping connection intermittently or failing to reconnect
Slow Wi-Fi speeds despite strong signal strength
Mac not auto-joining known networks after wake from sleep
High CPU during continuous network scanning in areas with many Wi-Fi networks
Go to System Settings > Wi-Fi, click 'Details' next to the connected network, and select 'Forget This Network.' Then rejoin it and enter the password again. This clears any corrupted authentication state.
Go to System Settings > Wi-Fi > Details > DNS and add reliable DNS servers like 1.1.1.1 (Cloudflare) or 8.8.8.8 (Google). Slow or unreliable ISP DNS servers can make Wi-Fi appear slow when the actual radio connection is fine.
Move /Library/Preferences/SystemConfiguration/com.apple.airport.preferences.plist to the Desktop as a backup (administrator password needed) and restart. This resets all Wi-Fi configuration including preferred networks. You'll need to rejoin your networks, but it resolves deep configuration issues.
In System Settings > Network, click the '...' menu and select 'Locations' > 'Add Location.' Switch to the new location. This creates a fresh network configuration while preserving the old one as a fallback.
Background Wi-Fi scanning and roaming are normal. Look closer if your Mac keeps joining unknown or open networks you didn't choose, or a network with a name close to one you know, which is how a fake 'evil twin' access point works. On macOS 26.5, a process named wifid is also worth checking: run 'ps -axo pid,comm | grep -i wifid' in Terminal to see its path, and 'codesign -dv' with that path to see who signed it.
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Common causes include interference from other devices, router firmware bugs, corrupted Wi-Fi preferences on your Mac, or your Mac preferring a weaker 2.4 GHz signal over a stronger 5 GHz one. Try forgetting and rejoining the network, or delete the Wi-Fi preference file and restart.
Guides describe wifid as a Wi-Fi management daemon, but on macOS 26.5 (checked October 29, 2026) there is none: airportd runs Wi-Fi, and WiFiAgent runs the Wi-Fi menu. If you see wifid on your Mac, check its path and signature the same way as any process you don't recognize.
A process that runs from /System or /usr and is signed by Apple (codesign shows Authority=Software Signing) is part of macOS. macOS 26.5 has no wifid, so a wifid running from anywhere else, or signed by someone other than Apple, deserves a closer look before you trust it.
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