It’s a good idea to make a complete backup of the contents of the web site folder before beginning the migration process, just in case you want to revert to the previous version.


Custom “appsettings” in web.config are no longer supported. Previously defined settings in web.config need to be moved to options.json

Application pool

The web application no longer supports using a shared application pool. If you previously hosted with a shared pool, create a new dedicated application pool.

Migrating existing data and settings

It’s recommended to migrate to a new application folder for this release. Once you create the new folder, make sure to set up the permissions as discussed in Configuring IIS. The App_Data, Project_Data, and Licenses folders contain all the files that should be migrated to the new release.

After this, continue publishing to the new application folder as discussed in the Publishing Horizon Reports help topic.


If you have existing plugins, they must be recompiled for .NET 6. If you aren’t sure how to do this, you can consider using the Automatic Compilation feature.