How To Use Event Viewer In Windows 10

Every Windows 10 user needs to know about Event Viewer. Windows has had an Event Viewer for almost a decade. Few people know about it. At its heart, the Event Viewer looks at a small handful of logs that Windows maintains on your PC. The logs are simple text files, written in XML format.

Although you may think of Windows as having one Event Log file, in fact, there are many — Administrative, Operational, Analytic, and Debug, plus application log files.

Every program that starts on your PC posts a notification in an Event Log, and every well-behaved program posts a notification before it stops. Every system access, security change, operating system twitch, hardware failure, and driver hiccup all end up in one or another Event Log. The Event Viewer scans those text log files, aggregates them, and puts a pretty interface on a deathly dull, voluminous set of machine-generated data. Think of Event Viewer as a database reporting program, where the underlying database is just a handful of simple flat text files.

Here’s how to use the Event Viewer:

  1. Right-click or tap and hold the Start icon. Choose Event Viewer.The Event Viewer appears.
  2. On the left, choose Event Viewer, Custom Views, Administrative Events.It may take a while, but eventually you see a list of notable events like the one shown.
  3. Don’t freak out.Even the best-kept system boasts reams of scary-looking error messages — hundreds, if not thousands of them. That’s normal. See the table for a breakdown.Events are logged by various parts of Windows.

Events are logged by various parts of Windows.
EventWhat Caused the Event
ErrorSignificant problem, possibly including loss of data
WarningNot necessarily significant, but might indicate that there’s a
problem brewing
InformationJust a program calling home to say it’s okay

The Administrative Events log isn’t the only one you can see; it’s a distillation of the other event logs, with an emphasis on the kinds of things a mere human might want to see.

Other logs include the following:

  • Application events: Programs report on their problems.
  • Security events: They’re called “audits” and show the results of a security action. Results can be either successful or failed depending on the event, such as when a user tries to log on.
  • Setup events: This primarily refers to domain controllers, which is something you don’t need to worry about.
  • System events: Most of the errors and warnings you see in the Administrative Events log come from system events. They’re reports from Windows system files about problems they’ve encountered. Almost all of them are self-healing.
  • Forwarded events: These are sent to this computer from other computers.

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