Radius authentication issue for wifi

[AsifParkar20245]

multiple users are unable to connect to wifi network. Meraki dashboard shows authentication and association failures for the SSID in question. what could be the issue for 802.1x authentication with Radius?

[marce1000]

 - Check the (radius)-logs on the Radius server (too) , what is reported for the failing authentications ?

 M.

[ammahend]

need more information

has this ever worked before ? when did the problem start ? what changed ?

what radius server you are using ? can you share radius logs ? when you do radius test from Meraki dashboard does it pass ?

[AsifParkar20245]

Hi @ammahend , pls find below:

has this ever worked before ? when did the problem start ? what changed ?

yes this has been working fine since years, the problem suddenly started last week

what radius server you are using ? can you share radius logs ? when you do radius test from Meraki dashboard does it pass ?

Windows server..from Meraki dashboard the test is successful

[marce1000]

        >....Windows server..

 https://social.technet.microsoft.com/Forums/windows/en-US/2d5376a4-eb80-428d-b642-3e30fc6438c3/where-are-the-logs-for-nps-stored?forum=winserverNAP

 M.

[ammahend]

if the tests are successful with the same credential as users are connecting, then we can rule out shared secret mismatch, AD issues. look at radius logs, as suggested by marce1000 below, check if there was any update pushed to clients...

[bsmagulov1]

Here you can find some advice on topic:

https://youtu.be/lZl_jv1keg8