Overview of the Issue

HDX is a set of remoting technologies providing the user with the best possible virtual application and desktop experience. The technologies within HDX include things like the ICA protocol, adaptive display, adaptive throughput, browser content redirection and more. 

Graphics and Display issues

• HDX Graphics Overview: https://community.citrix.com/tech-zone/design/design-decisions/hdx-graphics/

• Graphics Product Documentation: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/graphics.html

• Adaptive Display Overview: Citrix Tech Insight - Adaptive Display

Multi Monitor and DPI

• CTX230017 - Configuration of DPI matching and client-side scaling with Citrix Workspace app for Windows

• CTX201696 - Support for Monitors Including 4K Resolution and Multi-Monitors

• CTX261911 - In a multi-monitor environment, the main screen is not redrawn in full screen display.

Seamless Applications 

• CTX101644 - Seamless Configuration Settings

• CTX224400 - Seamless application window incomplete display in Dual-Monitor Windows 10 client

• CTX463924 - CWA 2206 or Above: Citrix Published Applications Randomly Lose Focus Or Get Minimized

• CTX263595 - Server 2019: File Explorer data is not refreshed in published app

HDX3D Pro Graphics

• HDX 3D Pro overview: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/graphics/hdx-3d-pro

• CTX237608 - Display adapter priority and monitor creation in Citrix sessions

• CTX316568 - Citrix Workspace app showing white screen, screen does not refresh, app resize issues on client machines running Intel Iris Xe-Treiber video driver

Improve the End User Experience

• Adaptive Transport overview: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/hdx-transport/adaptive-transport

• Citrix Tech Insight: Adaptive Transport: https://youtu.be/FyM47FDGw_4 

• CTX319067 - Rendezvous Protocol and EDT - HDX Adaptive Transport troubleshooting info

• CTX230014 - How to Troubleshoot EDT Connections

• CTX231821 - How to configure MSS when using EDT on networks with non-standard MTU

• CTX220774 - Connection Quality Indicator

Test Specific Applications 

It may be necessary to isolate legacy applications as a valid troubleshooting step

• CTX107825 - How to Disable Citrix API Hooks on a Per-application Basis

HDX Optimization and Audio

Microsoft Teams Optimization

• Microsoft Teams Overview: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/multimedia/opt-ms-teams

• Citrix Tech Insight: Microsoft Teams Optimization: https://youtu.be/BYzeltxcYJw

• Monitor, troubleshoot, and support Microsoft Teams: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/multimedia/opt-for-ms-teams/teams-monitor-ts-support

• CTX253754 - Troubleshooting HDX Optimization for Microsoft Teams

• CTX341471 - Microphone not detected in MS Teams through HP laptop

• CTX463717 - Microsoft Teams does not display video and shared screen

Multimedia Redirection for Other Softphones

• HDX video conferencing and webcam video compression: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/multimedia/webcam-compression

• CTX133024 - Delivering Softphones with Virtual Apps and Desktops

• CTX275259 - Microphone and video not working for Zoom meetings inside HDX session

Audio Redirection

• Audio Overview: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/multimedia/audio

• Audio Diagnostic Command Line tool: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/multimedia/audio#audio-diagnostic-command-line-tool

• CTX121613 - How to Enable and Manage Client Audio Settings for the Citrix Receiver using a Group Policy

• CTX133024 - Delivering Softphones with Virtual Apps and Desktops

• CTX240148 - Audio redirection is failing for desktops in ICA session.

• CTX443787 - Troubleshooting ICA Client Audio Issues

Browser Content Redirection

• Browser Content Redirection Overview: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/multimedia/browser-content-redirection

• Citrix Tech Insight: Browser Content Redirection: Citrix Tech Insight - Browser Content Redirection

• CTX230052 - How to Troubleshoot Browser Content Redirection

Tools:

• Audio Diagnostic Command Line tool: https://docs.citrix.com/en-us/citrix-virtual-apps-desktops/multimedia/audio#audio-diagnostic-command-line-tool

• CTX220774 - Connection Quality Indicator

This article is a summary of the support articles and documentation related to Graphics and Display issues, HDX Optimization (Teams and Browser Content Redirection) and Audio