We have windows server 2012 as Radius server. Sophos XG310 setup a wifi use wpa2-enterprise, using our AD credential to login for about 2 years. Suddenly, few days ago fail to sign in. It show error "Couldn't connect. Invalid credential". Try restart firewall and Server, try setup a new Radius server still get same error. However, in firewall test connection it is success. During this period, firewall and server also updated. I am not sure the issue causing by new update.
Please help.
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