Publishing an application with MSIX app attach
To publish an application from an MSIX application package:
Add a package to a session host as described in Using MSIX application packages.
Complete steps 1-2 as described in Publishing an application.
On the Select Server Type page, select RD Session Host, Virtual Guest, or Azure Virtual Desktop and click Next.
On the Select Application Type page, select Application Packages.
Perform steps 5-7 as described in Publishing an application.
The Installed Applications page will open listing available applications. Select an application you wish to publish and click Next.
Perform steps 10-11 as described in Publishing an application.
The Summary page will open. It contains information about the application you selected for publishing. Click Next.
Click Finish.