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A7500 recurring BSOD when used as Hyper-V virtual switch — WinDbg points to mtkwl6eux.sys
Experiencing recurring BSODs with my A7500 when configured as a Hyper-V external virtual switch on Windows 11 24H2. 4 crashes in 6 days. The adapter works fine in normal (non-Hyper-V) usage. Reproduction (on my system): 1. Enable Hyper-V on Windows 11 24H2 2. Create an external virtual switch bound to the A7500 shared with mgmt OS 3. Connect to a WiFi network 4. System BSODs within hours to days WinDbg analysis of the full kernel memory dump points to mtkwl6eux.sys (though I'm not a kernel debugging expert, so corrections welcome): - Bugcheck 0x139 (KERNEL_SECURITY_CHECK_FAILURE), param 0x3 — LIST_ENTRY corruption - A system thread created by mtkwl6eux.sys waits on an I/O buffer (pool tag IoSB) in nonpaged pool - The wait block for this thread is corrupted — both list pointers zeroed, Thread field NULL — consistent with a double-remove or use-after-free - Thread stack: mtkwl6eux → ndis!NdisWaitEvent → nt!KeWaitForSingleObject - The crash occurs when Windows' ETW subsystem enumerates threads and walks the corrupted wait list - All dumps have identical stacks. Failure bucket: 0x139_3_CORRUPT_LIST_ENTRY_nt!KiFastFailDispatch - Driver's internal PDB references MediaTek MT7921AU — may affect other adapters using the same chipset Ruled out: RAM (memory diagnostic passed), other drivers (corrupted memory and thread both trace to mtkwl6eux.sys), hardware (adapter works fine without vSwitch). Workaround: Move the Hyper-V virtual switch to a different adapter. Crashes stop. Environment: Windows 11 Pro 24H2 Build 26100.8037 | mtkwl6eux.sys v1.0.0.125 (latest) | USB 3.0 | Hyper-V + HVCI enabled Anyone else seen this? I've also opened a support case. Happy to share more dump details.My A7500 ADAPTER
I just purchased this adapter and when Im trying to install the driver the window that should open to process the insrall does not open. I installed on my laptop and had no problem. But in my desktop it just doesnt conplet the setup. Ive tried most troubleshooting solutionsbut none have worked.what can I do that maybe I haven't tried? I even turned off my ant virus.Connection stability issues Nighthawk AX1800 USB Adapter
Hi, I from France and just bought an adapter USB the Nighthawk AX1800 WIFI USB (A7500) . I constantly encounter problems with my connection. My wifi is very slow especially in games. I tought it could came from my router but there is no problem with my phone, ipad or TV. I start thinking that my adapter might be defective. anyone have a solution ? thx Nico