: Completely uninstalling the device from Device Manager and restarting your PC allows Windows to perform a fresh, automatic reinstallation.
It is common for users to encounter "Code 34" errors or disappearing Wi-Fi options. If your connection drops:
If your device is part of a specific laptop or desktop (like certain Lenovo or ASUS models), visit their official support page for the most stable OEM-verified driver.
Look for Realtek - Net or Realtek Semiconductor Corp. - WLAN . Check the box and click . Option B: Device Manufacturer Website realtek 8723du wireless lan 80211n usb nic driver windows 11
For the Realtek 8723DU Wireless LAN 802.11n USB NIC, having the correct and latest driver for Windows 11 is vital for:
If the automatic update fails, you can download the driver manually from the Microsoft Update Catalog:
The Realtek RTL8723DU operates on the 2.4 GHz band, delivering theoretical speeds up to 150 Mbps. Because it is a legacy Wi-Fi 4 device, Windows 11 does not always include a perfect plug-and-play driver for it in the base operating system repository. : Completely uninstalling the device from Device Manager
If you want, I can:
If Windows cannot find the driver, you can download it from reliable third-party driver aggregators that catalog these components 1.2.1 , 1.2.2 .
Right-click and select Update driver .
Microsoft hosts verified drivers for many hardware components. You can search for "Realtek 8723DU" directly on the Microsoft Update Catalog. At the time of this article’s publication, the latest driver available (version ) was released on July 30, 2025, and is compatible with Windows 11, version 24H2. Drivers found here are digitally signed and safe for your system.
How to Fix Realtek 8723DU Wireless LAN Driver Issues on Windows 11 Getting your Realtek 8723DU Wireless LAN 802.11n USB NIC
Windows 11 often automatically detects hardware, but generic drivers can lead to poor performance, such as: Frequent disconnection from Wi-Fi. "No internet access" errors. Slow data transfer speeds. Blue Screen of Death (BSOD) errors caused by rtwlanu.sys . Installing the Realtek 8723DU Wireless LAN 802.11n USB NIC driver Go to product viewer dialog for this item. Look for Realtek - Net or Realtek Semiconductor Corp
If a corrupted driver is causing issues, remove it entirely before reinstalling: Go to > Network Adapters . Right-click on Realtek 8723DU Go to product viewer dialog for this item. and select Uninstall device .