Black Screen when loading application with Citrix Receiver

On Windows computers with high resolution displays, Citrix Receiver may display a small black screen instead of the application stream on launch.

To fix this, try the below setting changes.

Fix #1

1. In the Windows notification area, locate the Citrix Receiver icon, right-click it and choose Advanced Preferences.
   
   
2. In the Advanced Preferences, click High DPI.
   
   
   
   
3. In the Scale the session for high resolution window, click Yes and Save. Close any open preference screen.
   
   
4. Right-click the Citrix Receiver icon again in the notification icon area and click Exit so Citrix reloads the changes when next starting.

The streaming app should now display correctly.

Fix #2

Follow the article at https://support.citrix.com/article/CTX135782/xaxd-black-or-blue-screen-connecting-to-published-desktop to apply registry setting changes.