For the past few years, Microsoft execs have been touting a coming feature of Windows Virtual Desktop -- MSIX App Attach -- as key to improving the performance and manageability of its WVD service. But it wasn't until today, April 13, 2021, that MSIX App Attach became generally available.
WVD, an Azure-based service, enables users to virtualize their Windows desktop, Office apps and other third-party applications by running them remotely in Azure virtual machines. Microsoft made WVD generally available globally in the fall of 2019.
Microsoft officials first discussed plans for MSIX App Attach at Build 2018. Microsoft's original plan was to enable MSIX App Attach on the Windows 10 side as part of its Windows 10 20H1/2004 release. Last year, Microsoft made MSIX App Attach available as a public preview to Windows 10 Enterprise users running version 2004.
MSIX App Attach enables users to skip having to maintain multiple master images for different applications and/or the ability to package all their virtualized apps into a single image. App Attach enables packaged applications to be stored outside a virtual machine so that each application can attach itself when users need it. It's a step beyond traditional app layering and app streaming, according to Microsoft execs, and is a key piece of Microsoft's strategy to separate user data, apps and the underlying operating system
Microsoft's brief blog post about MSIX App Attach availability spells out why the technology matters. From that post:
"MSIX app attach in Windows Virtual Desktop offers:
The Microsoft documentation for App Attach is available here.