Apache Log4net is a versatile, feature-rich, efficient logging API and backend for .NET

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  1. 6b97c3f :arrow_up: Bump braces, gulp and zarro by dependabot[bot] · 5 weeks ago master
  2. 19fb2d1 :arrow_up: upgrade zarro for upstream gulp-msbuild for upstream lodash CVE by Davyd McColl · 3 months ago
  3. 521162f removed more dead links (to sdk) #133 by Jan Friedrich · 4 months ago
  4. 652d89b Update release-notes.xml (#133) by Dan Atkinson · 4 months ago
  5. 8449651 :arrow_up: Bump minimatch from 3.0.4 to 3.1.2 (#100) by dependabot[bot] · 4 months ago


Apache log4net is a sub project of the Apache Logging Services project. Apache log4net graduated from the Apache Incubator in February 2007. Web site: http://logging.apache.org/log4net


For the latest documentation see the log4net web site at: http://logging.apache.org/log4net


log4net development happens on the logging dev mailing list, see https://logging.apache.org/log4net/mail-lists.html. Please join the mailing list and discuss bigger changes before working on them.

For bigger changes we must ask you to sign a Contributor License Agreement http://www.apache.org/licenses/#clas.

Github pull requests are one way to contribute, The Apache issue tracker is no longer accepting new issues but is available at https://issues.apache.org/jira/browse/LOG4NET for access to previous issues.


log4net targets a wide array of .net platforms, including some which are out of support from Microsoft, making it difficult to install relevant SDKs and build for those targets. In particular, older Client Profile .NET Framework targets and dotnet core 1.1 may be installed by using the bundled helper scripts:

These scripts download the relevant installers from Microsoft servers, but you run them at your own risk.

Please see