IAS Event ID 2: reason code 23: Unknown - Clients cant authticate

Hi,

I am having some problems with securing our WLAN with PEAP &
passwords. The client will not authenticate when a certificate is
specified. I CAN connect ok if i dont specify a certificate in the
wlan card settings.

I have a windows 2003 r2 domain. CA & IAS are installed on a DC. IAS
policy is configured to specify the certificate.

I have installed root certificate on client machines in Trusted Root
certification authorities.

Access Point auth: WPA
Enccryption: TKIP
EAP type: PEAP
Auth Protocol: MS-CHAP 2

I am seeing the following event logged on the IAS server:

I am bangiong my head on this one. I have reconfigured everything from
scratch twice, but cant understand why it wont work with the
certificate specified???

Any help really appreciated!

---------------------------

Event Type: Warning
Event Source: IAS
Event Category: None
Event ID: 2
Date: 28/05/2009
Time: 11:51:07
User: N/A
Computer: WMEDC02
Description:
User woodmac\laurco was denied access.
Fully-Qualified-User-Name = woodmac.com/User Objects/Technology/Colin
Laurie
NAS-IP-Address = 147.114.179.99
NAS-Identifier = 001c10667328
Called-Station-Identifier = 001c10667328
Calling-Station-Identifier = 00215c442961
Client-Friendly-Name = wap01
Client-IP-Address = 147.114.179.99
NAS-Port-Type = Wireless - IEEE 802.11
NAS-Port = 12
Proxy-Policy-Name = Use Windows authentication for all users
Authentication-Provider = Windows
Authentication-Server = <undetermined>
Policy-Name = WLAN
Authentication-Type = PEAP
EAP-Type = <undetermined>
Reason-Code = 23
Reason = Unexpected error. Possible error in server or client
configuration.

Same here... someone already found a solution or cause?

Regards Randy

Same issue here... anyone a solution?

"cdlaurie" wrote:

> Hi,
>
> I am having some problems with securing our WLAN with PEAP &
> passwords. The client will not authenticate when a certificate is
> specified. I CAN connect ok if i dont specify a certificate in the
> wlan card settings.
>
> I have a windows 2003 r2 domain. CA & IAS are installed on a DC. IAS
> policy is configured to specify the certificate.
>
> I have installed root certificate on client machines in Trusted Root
> certification authorities.
>
> Access Point auth: WPA
> Enccryption: TKIP
> EAP type: PEAP
> Auth Protocol: MS-CHAP 2
>
> I am seeing the following event logged on the IAS server:
>
> I am bangiong my head on this one. I have reconfigured everything from
> scratch twice, but cant understand why it wont work with the
> certificate specified???
>
> Any help really appreciated!
>
> ---------------------------
>
> Event Type: Warning
> Event Source: IAS
> Event Category: None
> Event ID: 2
> Date: 28/05/2009
> Time: 11:51:07
> User: N/A
> Computer: WMEDC02
> Description:
> User woodmac\laurco was denied access.
> Fully-Qualified-User-Name = woodmac.com/User Objects/Technology/Colin
> Laurie
> NAS-IP-Address = 147.114.179.99
> NAS-Identifier = 001c10667328
> Called-Station-Identifier = 001c10667328
> Calling-Station-Identifier = 00215c442961
> Client-Friendly-Name = wap01
> Client-IP-Address = 147.114.179.99
> NAS-Port-Type = Wireless - IEEE 802.11
> NAS-Port = 12
> Proxy-Policy-Name = Use Windows authentication for all users
> Authentication-Provider = Windows
> Authentication-Server = <undetermined>
> Policy-Name = WLAN
> Authentication-Type = PEAP
> EAP-Type = <undetermined>
> Reason-Code = 23
> Reason = Unexpected error. Possible error in server or client
> configuration.
>