Client authentication failed on {{TenantName}} due to client clock skew. Description: Kerberos authentication failed because of the client clock skew between client {{clientIpAddr}} and NAS controller {{nasControllerId}} of {{TenantName}}. Action Items: Fix client clock. Your client clock must be within 5 minutes range from the Kerberos server (i.e. AD) clock. Configure the used AD as an NTP server for this client to avoid clock skews errors.