Thanks!
This is the easiest method if you are using Visual Studio 2010 or later. Even though the version is old, it is archived on the NuGet gallery. log4net version 1.2.10.0 download
You're looking for a guide on downloading log4net version 1.2.10.0! Thanks
Alternatively, you can use the Package Manager Console: log4net version 1.2.10.0 download