Default Gateway Is Not Available on Windows How to Fix It

Share this post

Default Gateway Is Not Available on Windows: How to Fix It

You run the Windows network troubleshooter because the internet keeps cutting out, and it reports "The default gateway is not available". The default gateway is your router: the device every packet from your PC passes through on its way to the internet. The message means Windows cannot reach the router, even if the Wi-Fi or Ethernet icon says you are connected.

First: Is It Only This PC?

Check a phone or another computer on the same network. If they drop out too, the router or the internet line is the problem - see router connected but no internet. If only this PC loses the connection, work through the fixes below in order.

Fix 1: Restart the PC and the Router

A restart clears a stuck network driver on the PC and a stuck connection table on the router. Turn the router off for 30 seconds, turn it back on, wait two minutes, then restart the PC.

Fix 2: Stop Windows Turning the Network Adapter Off

Laptops often switch the Wi-Fi or Ethernet adapter off to save power, and it does not always wake up properly. This is the most common cause when the error keeps coming back.

Right-click the Start button and open Device Manager.
Expand Network adapters, right-click your Wi-Fi or Ethernet adapter, and choose Properties.
On the Power Management tab, clear Allow the computer to turn off this device to save power, then click OK.

For Wi-Fi, also check the power plan: open Control Panel > Power Options > Change plan settings > Change advanced power settings, expand Wireless Adapter Settings > Power Saving Mode, and set it to Maximum Performance. (Not every PC shows this option.)

Fix 3: Update or Roll Back the Network Driver

In Device Manager, right-click your network adapter and choose Update driver > Search automatically for drivers.
Better still, download the latest driver from the laptop maker's support page or the adapter maker (for example Intel, Realtek or Qualcomm) and install it.
If the problem started after an update, open the adapter's Properties > Driver tab and choose Roll Back Driver if it is available.

Fix 4: Reset the Network Stack

Open Command Prompt as administrator (right-click Command Prompt in the Start menu > Run as administrator) and run these commands one at a time:

netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns

Restart the PC afterwards. ipconfig /release disconnects you briefly; ipconfig /renew asks the router for a new address.

Fix 5: Check Security Software

Some third-party antivirus and firewall suites include their own network filtering that can block the connection to the router. Temporarily disable it (or uninstall it and use the built-in Windows Security), test for a day, and turn protection back on afterwards if it was not the cause.

Fix 6: Network Reset

If nothing above helps, reset all network settings to their defaults. Windows 11: Settings > Network & internet > Advanced network settings > Network reset. Windows 10: Settings > Network & Internet > Status > Network reset. Choose Reset now; the PC restarts, and you will need to re-enter Wi-Fi passwords and set up any VPN again.

Still Dropping?

If the connection still drops but other devices are fine, try a different Wi-Fi band on the router (2.4 GHz reaches further; 5 GHz is faster) or a USB Wi-Fi adapter to rule out a faulty built-in one. For more on unstable connections, see Wi-Fi keeps disconnecting; if the PC stays connected but nothing loads, see Wi-Fi connected but no internet.

Frequently Asked Questions (FAQ)

What does 'the default gateway is not available' mean?

Windows cannot reach your router, which is the gateway between your PC and the internet. The cause is usually on the PC side (network driver, power saving, a corrupted network setting) or the router itself.

Why does the default gateway keep becoming unavailable?

When it happens again and again, the most common causes are the network adapter being switched off to save power, an outdated or faulty network driver, or security software interfering with the connection.

Does this error mean my router is broken?

Not necessarily. If other devices stay online on the same network, the problem is almost certainly on the PC. If every device drops at the same time, look at the router.