Unable to setup the desktop session for display protocol


Issue: I was experiencing following error while connecting to Horizon View virtual desktop/ RDSH session through HTML 5 access

 Unable to setup the desktop session for display protocol, Please contact your system administrator.


Resolution:
By executing following steps, issue resolved for me.
If you have two more than one connection/ security server, shutdown down all servers except one server and isolate the issue. You can try same approach to isolate issues with RDS hosts/ virtual desktop if you have these kind of issues.
-          Try reinstalling “VMware Horizon View HTML Access” latest version. When you install HTML as part of the connection server, it might installed version 2.5.2080967 so uninstall it and reinstall as a separate installation package (VMware-Horizon-View-HTML-Access-2.6.0-2329873) by downloading from VMware downloads.


-          Clear “Preserve Favourites website data,  Temporary Internet files and website files and cookies and website data” then restart the browser to access view desktop/ rdsh session

-          Make sure that VMware tools installed first then View agent. This is the correct way of installation or else it might not work.

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