Build status NuGet Samples

Logging from Umbraco

Since Umbraco itself is written in ASP.NET, ELMAH works like a dream inside Umbraco. Besides logging uncaught errors, also supports other types of messages like information and debug. In fact, all the log levels that you already know from log4net, NLog and Serilog, are supported on as well. Logging in Umbraco CMS is based on log4net, which also support. We have brought all these pieces together into a NuGet package that we call: Elmah.Io.Umbraco.

To start utilizing from your Umbraco site, all you need to do is install the Elmah.Io.Umbraco package:

Install-Package Elmah.Io.Umbraco

During the installation, you will be asked for your API key (Where is my API key?) and log ID (Where is my log ID?).

Hit F5 and watch messages start flowing into

Elmah.Io.Umbraco 3.x depends on UmbracoCms.Core >= 7.6.3. If you are on a previous version of Umbraco, you can use Elmah.Io.Umbraco 1.0.25, which depends on UmbracoCms.Core 7.2.5.

Umbraco Cloud

When using Umbraco Cloud, you may not have a local clone of the source code. To install on Umbraco cloud, execute the following steps:

Install-Package Elmah.Io.Umbraco
  • Commit and push all changes to the git respository. This will add logging to your remote Umbraco Cloud project.

In case you want logging to different logs from each Umbraco Cloud environment, please check out Umbraco's support for config transformations here: Config transforms.

What's inside?

The Elmah.Io.Umbraco package basically installs and configures three things:

  • The log4net appender (Warn and above)
  • An Umbraco content finder for logging 404's
  • ELMAH with as error log

All unhandled exceptions from both ASP.NET / MVC / Web API as well as 404's are logged automatically. Warnings, errors and fatal messages logged through log4net are send to as well.


If you are running on the default Umbraco template, all nessecary configuration is added during installation of the Elmah.Io.Umbraco NuGet package. If your web.config file for some reason aren't updated during installation, you can configure manually: Configure manually. Likewise, the installer configure the appender for log4net in your Config\log4net.config file. If the config isn't added or you are configuring log4net in another location (like web.config, here's a guide to set it up: Logging from log4net.

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