Recently installed Task Factory components are not showing up in SSIS toolbox.
Starting with SQL Server Data Tools 2016 (SSDT 16 Release Candidate 1), there is new backwards compatibility to build and edit packages for previous versions of SQL Server Integration Services. Occasionally SSDT will target a version of SSIS that doesn’t have a version of Task Factory installed that supports the TargetServerVersion they selected. For example, if you performed a custom Task Factory install and selected only 2014 support, and then tried to work with a project with the TargetServerVersion set to 2012, you wouldn't see the Task Factory items in the toolbox.
One option is to reinstall Task Factory, making sure to select the appropriate SSIS versions that you plan to work with. Alternatively, you can change the TargetServerVersion of the SSIS project to match an installed version of Task Factory.
1. In Visual Studio Solution Explorer right click on the project and click “Properties”.
2. Then in the left window panel click on “Configuration Properties” and then choose a different version of SQL Server in the “TargetServerVersion” drop down menu
3. Hit OK, then re-open the package and the Task Factory components should now show up in the SSIS toolbox.
When the TargetServerVersion matches an installed version of Task Factory, you will see the components in your SSIS Toolbox