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Daniel Doubrovkine

aka dB., @awscloud, former CTO @artsy, +@vestris, NYC

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Are you using log4j’s NTEventLogAppender to send events to the Windows event log? Then you’re familiar with NTEventLogAppender.dll that one must place in the Windows system directory or PATH. This is often a source of major confusion and bedazzlement for Java developers. There’s now a separate 32-bit version and a 64-bit version and lots of problems loading the same DLL from various web applications (aka “it doesn’t work”). So lets get rid of it!

Introducing log4jna, a small project that uses Java Native Access (JNA) and implements the same appender without a need for a native library.


Download a build, compatible with log4j 1.2 and swap your appender for org.apache.log4jna.nt.Win32EventLogAppender. There’re a few other small things to worry about described in the documentation.