Cisco-owned multi-factor authentication (MFA) provider Duo Security is investigating an ongoing outage that has been causing authentication failures and errors starting three hours ago. The outage ...

Microsoft’s May Patch Tuesday update is triggering authentication errors. Microsoft is alerting customers that its May Patch Tuesday update is causing authentications errors and failures tied to ...

Are you having problems playing League Of Legends because of “authentication service” error? In this troubleshooting guide, we’ll explain to you the reasons for ...

Microsoft has shed some light on the root cause behind yesterday's massive Azure authentication outage that affected multiple Microsoft services and blocked users from logging into their accounts.

A fix introduced into Windows last month to close a weakness in Kerberos authentication is causing logon failures for some Windows Hello for Business (WHfB) users, Microsoft has warned. In theory, the ...