How do I Read Windows Log Files?

Reading Windows log files is an important part of maintaining proper operation and ensuring system security. In addition, log files can be extremely useful in troubleshooting errors.

Some Windows log files, such as the Security Event Log, are only able to be read by a Windows Administrator. Other log files, such as logs created by sofware applications, can be viewed by any system user.

Each log contains a list of events which have occurred, along with problems or failures.

How to Read the Windows Application, Security, and Sytem Log Files

The Windows application, security and system log files can be read with the "Event Viewer", which is accessed through the Control Panel:

On the desktop, click the Start button
Click the Control Panel menu item
A separate window will open
In the new window, double-click the Administrative Tools icon
The Administrative Tools window will open with a list of different icons available
Double click the Event Viewer icon

How to Read Other Windows Log Files

Many log files used by software applications are written as plain text file, making it possible to use any freeware text editor, "Notepad," or "WordPad" to read the log files generated. To read .txt files in WordPad:

On the desktop, click the Start button
Click All Programs
Click Accessories
Click WordPad
A new WordPad window will open
Click the File menu
Click the Open menu item
Navigate to the log file which you wish to read and click the Open button

There are also programs available which give you the ability to monitor log files as they occur in real-time. Examples of software of this type include Tail For Win32 and Hoo WinTail. These programs make it easy to read new entries from the bottom (tail) of the log file.