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imrazor

macrumors 6502
Original poster
I recently set up a new WiFi router (well actually built it with Linux, a TP link PCIe WiFi adapter, hostapd and dnsmasq.) After a good bit of trial and error, I've gotten my old 2017 iMac 5K to connect with Ventura. However when I try to connect with Windows 10 on said iMac, the WiFi selector says that it can't connect to this network.

Turns out this is almost certainly because I've set the new WiFi access point to exclusively use WPA3 authentication. While it seems MacOS is perfectly happy with this situation, it appears that the Windows driver provided by Apple Bootcamp doesn't support WPA3, only up to WPA2. Various Google results claim this is because the WiFi adapter hardware in the old iMac is not WPA3 compatible. But that's clearly not true, since the very same hardware has no trouble connecting to the very same WPA3 network under MacOS.

So is there any version of the Windows Broadcom 43602 802.11ac driver that will actually work with WPA3?
 
Have you tried updating the drivers through Apple Software Update in Windows? WPA3 support was added in Bootcamp 6.1.16 in August 2022.

 
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