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4770Security (DC)AuthenticationINFOLast updated:

Kerberos service ticket renewed

What it means

An existing ticket was extended without re-authentication. Perfectly normal in long sessions.

First steps

  1. 1Usually noise — do not alert on it.
  2. 2Only interesting during an investigation: renewals from a host that should not hold the ticket.

Related events

This reference is a starting point for investigation, not a replacement for your organisation's security policy.