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5723System (DC)Replication & DCsWARNLast updated:

Secure channel request from a machine account that does not exist

What it means

A computer talks to the domain but has no AD account — deleted, or never properly joined.

First steps

  1. 1Check whether the computer account exists in AD.
  2. 2Rejoin the domain if needed.

Related events

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