Revit 2019.2 update has been around for a couple of days now. It brings some great features that enhance connectivity and productivity (see the list of enhancements @ Autodesk blogs). But in some cases the update fails to install correctly, and here is why:
- The problem with Revit 2019.2 occurs on systems that had the Revit 2019.1 update installed first and the Revit 2019.0.2 security fix applied later.
- The Revit 2019.0.2 security fix failed to block the unsupported update path, leaving Revit 2019 in a bad state.
The only known solution for this problem is to completely uninstall and reinstall Revit 2019, and then apply the 2019.2 update (see this thread @ Autodesk forums for reference).
If you experienced other installation issues, please see the Troubleshooting article @ Autodesk knowledge network.