Before installing anything, let’s ensure you actually have an 8723DU.
If the official links are broken or difficult to navigate (which is common with Realtek), several reputable tech sites archive these specific drivers. realtek 8723du wireless lan 80211n usb nic driver windows 11
Summary: If Windows Update doesn't find it, try the Microsoft Update Catalog search method (Method 2B). It is the safest way to get a Microsoft-signed driver without risking malware from random download sites. TCP/IP stack tuning for high-throughput transfers:
Even after installation, the Realtek 8723DU misbehaves on Windows 11 due to aggressive USB power saving and 802.11n packet loss. Antenna diversity: