Mac

Mac Wi-Fi keeps dropping or disconnecting

Frequent Wi-Fi drops on a Mac are usually caused by a router issue, an outdated network setting, or interference rather than a hardware fault, and often clear up with a few network resets.

Difficulty
Easy
Time
15–30 minutes
DIY cost
$0
Pro cost
$80–$150

Symptoms

  • Wi-Fi icon shows connected, then disconnects on its own
  • Internet works fine on other devices but drops specifically on the Mac
  • Reconnecting manually works temporarily before it drops again
  • Drops happen more in certain rooms or at certain times

Likely causes

  • CommonRouter or modem needing a restartRouters can develop temporary glitches that a simple restart clears.
  • CommonWi-Fi interference from other devices or networksCrowded 2.4GHz bands especially are prone to interference.
  • PossibleOutdated network location or corrupted Wi-Fi settings on the MacCached network preferences occasionally become inconsistent.
  • PossiblemacOS or router firmware needing an updateBugs in either can cause connectivity issues that get fixed later.
  • Less commonA failing Wi-Fi card or antenna (less common)This is more likely if drops happen regardless of location or router.

What to do

  1. Restart your router and modem by unplugging them for 30 seconds, then plugging back in.
  2. Check if other devices on the same Wi-Fi network also have issues, which would point to the router rather than the Mac.
  3. Update macOS in System Settings > General > Software Update.
  4. Forget the Wi-Fi network in System Settings > Wi-Fi > Details, then reconnect and re-enter the password.
  5. Turn Wi-Fi off and back on from the menu bar to reset the connection.
  6. Move closer to the router temporarily to rule out signal strength as the cause.
  7. Check your router's admin settings for firmware updates.
  8. As a deeper reset, remove the Wi-Fi-related system files (SystemConfiguration preference files) with guidance from Apple support, or reset network settings via a fresh network location.

Tools and parts

  • None required

When to call a pro

If Wi-Fi drops only on this Mac despite a stable router and updated software, an Apple Store or repair shop can test for a failing Wi-Fi card.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.