Right-click the button and select Device Manager .
The adapter in Device Manager shows a yellow exclamation mark with error Code 34 , indicating a problem with the driver. Users have reported having to restart their computers several times a day to regain Wi‑Fi functionality.
Driver Guide: Realtek 8723DU Wireless LAN 802.11n USB NIC for Windows 11 Realtek 8723DU Wireless LAN 802.11n USB NIC Right-click the button and select Device Manager
Sort the results by or Version to find the latest driver compiled for Windows 10/11 (Drivers built for Windows 10 x64 are fully compatible with Windows 11). Click Download next to the correct driver package.
The Realtek 8723DU Wireless LAN 802.11n USB NIC is a network interface card (NIC) that allows Windows 11 computers to connect to wireless networks. Because it is an older 802.11n (Wi-Fi 4) device, finding current official drivers directly from Realtek can be challenging, but there are several reliable ways to get it working on Windows 11. Driver Guide: Realtek 8723DU Wireless LAN 802
Surprisingly, many of these chips are sold under generic brands on Amazon/AliExpress (like Fenvi orgeneric USB dongles). They all use the same driver source.
Do not use third-party "driver updater" software. These often install malware or the wrong variant (e.g., the 8723DE or 8723BS variant, which uses SDIO instead of USB). Because it is an older 802
Look under the dropdown for any mention of "Realtek," "Wireless LAN," or "802.11n USB NIC." Check the box and click Download & install . Method 2: Manual Installation via Device Manager
If Windows cannot find the driver, you may need to download it from a third-party driver repository, as official Realtek driver pages can sometimes be difficult to navigate for specific OEM NIC products. DriverHub Realtek 8723DU Treexy Driver Fusion Database Note: Always ensure the source is trusted to avoid malware. Troubleshooting: Realtek 8723DU Not Working in Windows 11
Extract the downloaded driver .zip folder to a memorable location (like your Desktop).