Fix WiFi Disconnecting on Windows 10/11

Symptoms

• WiFi icon shows connected but no internet access intermittently.
• Network drops every few minutes or hours without warning.
• Reconnecting manually or restarting PC temporarily fixes the issue.
• Other devices on same network work fine.

Root Causes

1. Power Saving Settings

Windows may turn off the WiFi adapter to save power, especially on laptops.

2. Outdated or Corrupt Network Drivers

Old drivers can cause instability and frequent disconnections.

3. Interference and Channel Congestion

2.4GHz networks are prone to interference from microwaves, Bluetooth, or neighboring routers.

4. Router Issues

Outdated firmware, DHCP lease problems, or overloaded router can cause drops.

5. Network Profile Corruption

Corrupt saved network settings can lead to authentication failures.

Step-by-Step Fix

1. Disable Power Saving on WiFi Adapter
   Go to Device Manager > Network adapters > Right-click your WiFi adapter > Properties > Power Management tab > Uncheck "Allow the computer to turn off this device to save power". Click OK.
2. Update WiFi Driver
   In Device Manager, right-click WiFi adapter > Update driver > Search automatically. If no update, visit manufacturer website (Intel, Realtek, etc.) to download latest driver.
3. Run Network Troubleshooter
   Settings > Update & Security > Troubleshoot > Additional troubleshooters > Internet Connections > Run the troubleshooter.
4. Reset Network Settings
   Settings > Network & Internet > Status > Network reset > Reset now. Restart PC.
5. Change Wireless Mode
   Device Manager > WiFi adapter > Properties > Advanced tab > Look for "Wireless Mode" or "802.11n/ac/ax" > Set to a compatible mode (e.g., 802.11g/n).
6. Adjust Router Settings
   Log into router admin (192.168.1.1 or 192.168.0.1). Change WiFi channel (use 1, 6, or 11 on 2.4GHz). Update firmware. Disable band steering if available.
7. Renew DHCP Lease
   Open Command Prompt as admin. Type: ipconfig /release then ipconfig /renew. Then ipconfig /flushdns.

Alternative Fixes

• Use 5GHz Band if supported – less interference and faster.
• Forget and Reconnect Network: Go to Settings > Network & Internet > WiFi > Manage known networks > Select network > Forget. Reconnect by entering password.
• Disable IPv6: Network Connections > Right-click WiFi > Properties > Uncheck Internet Protocol Version 6 (TCP/IPv6).
• Change Power Plan: Control Panel > Power Options > Select High Performance plan.

Prevention

• Keep WiFi drivers updated automatically via Windows Update or manufacturer tool.
• Place router centrally away from electronic devices.
• Use a WiFi analyzer app to choose least congested channel.
• Restart router monthly to clear cache and renew leases.
• Consider upgrading to a dual-band router if using 2.4GHz only.

If none of the above work, test with a USB WiFi adapter to rule out hardware failure. For persistent issues, contact your ISP to check line quality.