Windows + 802.1x

Yury Shvedov yshvedov at
Tue Jul 28 06:03:42 EDT 2015

Hi, Thanks for your reply.

But I had the problem with Windows7 and already found its source (my
mistake). But now I have another problem with Windows in rsn
environment. Windows connects successfully, 4-way handshake(RSA) done,
and even there is an Internet for windows client. But in the windows's
network menu against my network there is red cross and client always
disconnects and connects.

Have someone ever faced with such problem?
Thank you.

С уважением,
Юрий Шведов
WiMark Systems

On 07/24/2015 07:44 PM, Christian Lamparter wrote:
> On 7/23/15, Yury Shvedov <yshvedov at> wrote:
>> I'm using part of hostapd code in my project to perform wpa/wpa2/802.1x
>> authentication. It works good in scheme  Client <---> Authenticator
>> <---> FreeRadius until Client runs under Windows. With Windows after
>> successful 802.1x authentication, my (partly hostapd's) authenticator
>> sends 4-way response messages, but Windows doesn't respond. Android and
>> iOS clients works well.
>> Have someone faced with this issue withing hostapd developing?
> This sounds exactly like an old problem I had with XP/2003. If this is the case,
> then the easiest solution would be to update your version of Windows.
> As these old OSes are no longer supported by Microsoft (and also don't support
> TLS 1.2 [0], which is important too!)
> If you want to know more the issue, you can take a look at this KB entry [1].
> In my case the crucial part was that the "server computer certificate" needed
> to be configured with "the Server Authentication purpose". Once this was
> done, it worked.
> Later Windows Versions (Vista, ...) didn't seem to care about this anymore,
> so they work out of the box.
> Regards,
> Christian
> [0] <>
> [1] <>

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