Symptoms

• Parallels Client for Mac is not showing the published app's window even though the session is established on the RDSH/VDI/RemotePC
• macOS Mojave (10.14) or below in use.

Cause

Parallels Engineering is aware of this issue and working on the resolution.

Workaround

Downgrade Parallels Client to v17.1 as a temporary solution. Download link:

https://download.parallels.com/ras/v17/17.1.2.21868/RasClient-Mac-Appstore-17.1.2-21868.pkg