Why would Virtual ViewX stop working with an “Application load failed” error after performing an upgrade?

After performing an upgrade, one of the common causes of Virtual ViewX failing with an "Application load failed" error is that the Secondary Logon Windows service has been disabled, often as a result of a computer hardening policy, Group Policy (GPO), security baseline implementation, or changes made by endpoint security software.

Virtual ViewX relies on the Secondary Logon service to launch processes under the appropriate user context. If this service is disabled, Virtual ViewX may be unable to start correctly, resulting in the "Application load failed" error when users attempt to connect.

To resolve the issue, verify that the Secondary Logon Windows service is enabled and set to Manual startup:

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