5GHz Wi-Fi Not Showing Up Windows 11 Fix [2026]

Quick Answer: 5GHz not showing because router uses same SSID for both bands or adapter doesn't support 5GHz. Log into router and verify 5GHz is enabled with different name, or check adapter supports 802.11a/n/ac.

Symptoms

Only 2.4GHz network visible
5GHz worked before but disappeared
Can't connect to high-speed Wi-Fi
Router shows 5GHz enabled but not detected

Root Cause

Router band steering, adapter limitations, or driver issues.

Fix

Method 1: Check Adapter Supports 5GHz

Get-NetAdapter | Select-Object Name, InterfaceDescription

Check if "802.11a" or "802.11ac" in description.

Method 2: Enable 5GHz Band

Device Manager → Wi-Fi adapter → Advanced → Preferred Band → 5GHz

Method 3: Update Wi-Fi Drivers

Get-PnpDevice -Class Net | Update-PnpDevice

Method 4: Router Settings

Log into router → Wi-Fi → 5GHz → Enable with unique SSID name

How Againly Helps

Againly runs check_wifi_performance to detect 5GHz capability and router configuration.

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Related: Wi-Fi Keeps Dropping

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