Revit 2024 Content Library Missing. There was a change in how library content is loaded with the 2021 version of revit. After installing, updating, or reinstalling revit or revit lt, the family libraries of family templates or family files appear to be missing and cannot be loaded into the project.

If you have looked at the above location and you still cannot find the content libraries, then this simple and fast trick will work. It will ensure that the missing content.