The disadvantages of using the Nested MSI's are,
- Nested Installations cannot share components.
- An administrative installation cannot contain a nested installation.
- Patching and upgrading will not work with nested installations.
- The installer will not correctly cost a nested installation.
- Integrated ProgressBars cannot be used with nested installations.
- Resources that are to be advertised cannot be installed by the nested installation.
- A package that performs a nested installation of an application should also uninstall the nested application when the parent product is uninstalled.