Overview The element of the element contains attributes that allow you to configure logging for a site on IIS 7 and later. For example, you can enable or disable logging, configure the format of the IIS log file, specify the categories of information to store in the log file, and change the directory where the log file is stored. You can also use the element to control how often IIS creates a new log file based either on log file size or time interval and the maximum size (in bytes) that a log file can become. By default, IIS 7 and later uses the World Wide Web Consortium (W3C) log file format. You can change this setting by modifying the logFormat attribute to IIS, NCSA, or Custom.

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Note If the element is configured in both the section and in the section for a specific site, the configuration in the section is used for that site. IIS 8.5 enables you to log custom fields in addition to the standard logged set. The log file format must be W3C to add custom fields. For more information, see. Compatibility Version Notes IIS 10.0 The element was not modified in IIS 10.0. IIS 8.5 Added the flushByEntryCountW3CLog attribute to specify the number of events to be store in the buffer before they are flushed to the log file.

Added the logTargetW3C attribute to specify how logged IIS events are processed. Added the maxLogLineLength attribute to specify the maximum length of a line in a log file.

Added the child element. IIS 8.0 The logSiteId attribute was added to specify the contents of the -sitename field, and referer flag was added to the default value of the logExtFileFlags attribute.

IIS 7.5 The element was not modified in IIS 7.5. IIS 7.0 The element of the element was introduced in IIS 7.0. Easy Media Player 1.1.12 The Luggage here. IIS 6.0 The element replaces sections of the logging properties on the IIS 6.0 IIsWebService metabase object. Setup The element is included in the default installation of IIS 7 and later. How To How to edit logging settings for a site • Open Internet Information Services (IIS) Manager: • If you are using Windows Server 2012 or Windows Server 2012 R2: • On the taskbar, click Server Manager, click Tools, and then click Internet Information Services (IIS) Manager. • If you are using Windows 8 or Windows 8.1: • Hold down the Windows key, press the letter X, and then click Control Panel. • Click Administrative Tools, and then double-click Internet Information Services (IIS) Manager.

• If you are using Windows Server 2008 or Windows Server 2008 R2: • On the taskbar, click Start, point to Administrative Tools, and then click Internet Information Services (IIS) Manager. • If you are using Windows Vista or Windows 7: • On the taskbar, click Start, and then click Control Panel. • Double-click Administrative Tools, and then double-click Internet Information Services (IIS) Manager. • In the Connections pane, expand the server name, expand Sites, and then click the Web site on which you want to configure logging. • In the Home pane, double-click Logging. • In the Logging pane, select the log file format in the Format box, and then type the path to the directory where you store the log files in the Directory box or click Browse.

To choose the directory in which to store the log files. • If you choose to use the W3C log file format: • Click Select Fields to choose the types of information to log. • In the W3C Logging Fields dialog box, select the check boxes for options you want to log, clear the check boxes for options you do not want to log, and then click OK. How to configure ETW or file logging for W3C logs • Open Internet Information Services (IIS) Manager: • If you are using Windows Server 2012 R2: • On the taskbar, click Server Manager, click Tools, and then click Internet Information Services (IIS) Manager. • If you are using Windows 8.1: • Hold down the Windows key, press the letter X, and then click Control Panel.

• Click Administrative Tools, and then double-click Internet Information Services (IIS) Manager. • In the Connections pane, expand the server name, expand Sites, and then select a site. • In the site's home pane, double-click Logging. • In the Logging home page, for Log Event Destination, select Log file only, ETW event only, or Both log file and ETW event. How to configure flushing a W3C log by entry count • Open Internet Information Services (IIS) Manager: • If you are using Windows Server 2012 R2: • On the taskbar, click Server Manager, click Tools, and then click Internet Information Services (IIS) Manager.