If an agent upgrade failure occurs on a desktop for a dedicated VDI desktop assignment, you might be able to perform an agent reinstall on the desktop. Specifically, if the upgrade failure leaves the agent in an offline state, the desktop is eligible for an agent reinstall operation, which you can perform from the Desktops page.
When you perform the agent software update, if you select the Enable Rollback option, you have the option later to rollback back to an older version of the agent. After you perform an agent update, if the agent update fails, the tooltip provides specific information about the failure. For example, the message might indicate that you can attempt to reinstall the agent. For details about updating Horizon Agent software, see the applicable topic, Update Agent Software on the Assignments Page for Dedicated VDI Desktop Assignments or Update Agent Software on Individual Desktops for Dedicated VDI Desktop Assignments.
When you reinstall the agent software on desktops, the system attempts to install the latest available agent software on the desktop. You can also customize the horizon agent features to be installed for the target desktop OS type. See the Advanced Options discussed in Create a Base Virtual Machine Automatically from the Microsoft Azure Marketplace and Pair it with Horizon Cloud on a Per-Pod Basis for details on each feature.
Procedure
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Click the name of the failed assignment and click Desktops.
The Desktops page lists all the desktops, including desktops where the status is listed as a failure. Hover over such status icons to see the tooltip, which might suggest that you try an agent reinstall.
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Select the check box next to all the desktops on which you want to perform the reinstall operation.
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Select Agent > Reinstall Agent
The Horizon Agent Reinstall Features page appears.
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Turn on or off features as needed and click Reinstall.
See the reference information mentioned preceding these steps for more details about the features.
Results
The system starts to reinstall the Horizon Agent.
What to do next
To monitor the status of the reinstall process, go to Monitor > Activity. When the process is complete, the system removes the failed-status icons.
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