How to fix windows was unable to find a certificate to log on to the WiFi connection

SOURCE: connecting to network

[QUOTE]The exact error message should be:
"Windows was unable to find a certificate to log you
on to the network [SSID]"
Google shows 37 hits with this exact phrase.
This is caused by setting the encryption to WPA-RADIUS instead of
WPA-PSK on the client radio. Both the router and the client are
trying to find a RADIUS server with which to authenticate your system.
Switch the encryption to WPA-PSK (pre-shared key) on both ends and it
will work.[/quote]

SOURCE: Wireless network connection windows was

xp : go to start --> control panel ---> on the top leff click on "switch to classic view" then open network and internet connections right click on the wireless conn. then from the upper tabs go to "Authentication"  your setting should be as following :
Enable IEEE 802.1x ....... (cheked) EAP Type : Smart Card or certificate Authenticate as computer ...... (checked) Authenticate as gues ..............(unchecked)
then click on "properties"
choose "use a certificate on this computer" and check "use simple caertificate ......" and check "Validate server certtificate" click ok till u close all the boxes 
:D hope that would work :D

SOURCE: windows was unable to find certificate to log on

hi,
That's caused by improperly setting the encryption to WPA-RADIUS instead of WPA-PSK on the client. The router and the client are both trying to find a RADIUS server with which to authenticate. Since you
don't have one, it complains using Microsoft technobabble. Change the encryption to WPA-PSK (pre-shared key) on both ends.

Prashant M

• 2278 Answers
• Posted on Oct 31, 2009

SOURCE: This is the message I get:

hey !
It is very simple problem .
All you need to do is add the network manually .
Click Here for more info about wireless networking

SOURCE: windows was unable to find certificate to log on

This type of error message appear when we are trying to connect to the wireless network.
For Windows(xp) perform the following steps:-
a)click on start menu and then go to control panel and then open network connections from there.
b)Under network connections an option for wireless connection exist , right click on that option and then click on properties.
c)Under wireless network connection properties there are three tabs general , wireless network and advanced.
d)Left click on wireless network tab and check the box which says use windows to configure my wireless setting's and click OK at the bottom.
e)Then , Right click again on wireless network connection and click properties and then again click on wireless network tab.
f)At the bottom of the wireless network tab you will have preferred networks and in that small box yo will have list of networks and therefore delete all of them from there including the one you are trying to connect to.
g)On the right hand side of preferred networks you will have ADD click on that option and enter the details of your network manually.
SSID(name of the network)
Network Authentication:-Open if the security is WEP else WPA-Personal.
Encryption:-WEP for wep security TKIP/AES for WPA-PSK.
Network key/Confirm network key:-is the wep key or wpa-psk password.
Untick the box at the bottom that says the key is provided to me automatically.
Click OK at the bottom and close the properties window.
h)Then , Right click again on wireless network connection and then left click on view available wireless network.
i)List of available networks will be there , select the network you use and try connecting to it , it will get connected automatically.