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Title: Realtek 8811CU Wireless LAN 802.11ac USB NIC Driver for Windows 11
Description:
This driver package enables the Realtek 8811CU USB adapter (802.11ac) to function properly on Windows 11 systems. Supports both 2.4GHz and 5GHz bands with Wi-Fi 5 (AC) connectivity.
Compatible OS: Windows 11 (22H2, 23H2, 24H2 and later), 64-bit only.
Features:
Installation:
Run setup.exe as Administrator. Do not plug in the adapter until the installer prompts you (or unplug during install if already connected).
Q1: Is the Realtek 8811CU compatible with Windows 11 24H2 (the latest 2025 update)?
Yes, but you must have a driver version 1030.45.xxx or newer. Older 2019 drivers will fail with Code 52. As of early 2025, the latest signed driver is version 1030.46.1201.2023.
Q2: My adapter worked on Windows 10 but broke after upgrading to Windows 11. Why? Windows 11 enforces stricter driver signing. The Windows 10 driver is not properly signed or is blacklisted by Microsoft’s HVCI (Hypervisor-protected Code Integrity) feature. You need to disable Memory Integrity (Core Isolation) or install a newer signed driver. Title: Realtek 8811CU Wireless LAN 802
Q3: How do I disable Memory Integrity to fix driver issues? Open Windows Security → Device Security → Core Isolation → Turn off “Memory Integrity.” Restart. Then reinstall the 8811CU driver.
Q4: I have a TP-Link Archer T2U Plus. Is it really an 8811CU? It depends on the hardware version:
Q5: Can I use this driver for Linux?
Yes, but that’s beyond this article. For Linux, you need to compile the rtl88x2cu driver from GitHub (not the same as Windows driver). Installation:
Run setup
Even if the device is configured correctly, Windows USB settings can override it.
The Fix:
