Windows Snap only works in seamless apps when explorer.exe is running

DanielG64

Bit poster
Hi all,

we’re running RAS 21.2 on Server 2025 RDSH, and Windows Snap doesn’t work properly for seamless published apps (SAP B1, even Notepad).

After setting WinArrangement = 0 (KB 130140/130264), drag-to-top maximizes fine, but left/right snapping and Snap Layouts still don’t work. User settings and GPOs look fine.

Inside a published desktop everything snaps fine. As soon as we launch a published explorer.exe in the same session, snapping works for all the other apps too, B1 included. So it looks like Snap needs explorer.exe, which isn’t running in a pure app session.

Our workaround for now: a logon task that starts explorer.exe in the background and closes its window.

Is this a known limitation? Is there a proper way to get Snap working without explorer.exe, or any side effects we should watch out for?

Thanks!
 
Back
Top