Diagnostic Guide

Windows Service and Server Incident Runbooks

Read the event log properly and trace a failed service, update or network component back to its actual cause.

On a server — or any machine someone depends on — the event log is the starting point, not a curiosity. A service that fails to start, an update that will not apply, or a network component that drops usually leaves a specific event behind, and that event names the dependency to check next. These runbooks work from the recorded evidence outwards, and flag the changes that need approval before you make them.

Work through these questions first

  1. 1What exactly did the event log record, and when did it start?
  2. 2Is a dependency, permission or missing binary behind the failure?
  3. 3Is the fault local to this machine or shared across the environment?
  4. 4Does the change need approval or a maintenance window first?
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