You can install a package from the registry only when the scope is set to All packages:
Open the Package Manager window and select All packages from the package scope drop-down menu.
Note: By default, the Package Manager does not display preview packages. If you don’t see the package in the list of packages, it may be a preview package. Make sure Show preview packages is enabled under the Advanced drop-down menu on the Package Manager window. For more information, see Including Preview packages.
Select the version to install. For more information on available versions, see Finding a specific version.
Click the Install button.
When the progress bar finishes, the new package is ready to use.