It is possible that the Intelligent Agent installer will display warning messages during its operation or in the logs after completion. Some noteworthy items are documented in this article.
Installation log files are automatically created at the completion of the Intelligent Agent installer wizard's process in the \\IA Installation\data\logs\installation\ folder.
Application Initialisation Failed to be Enabled
It is possible that at the end of the installation process a message will be displayed in the Errors and Warnings list: "Application Initialisation Failed To Be Enabled". This will also be reflected by an entry in the Intelligent Agent installation logs containing text like "An error occurred running an external application dism.exe /online /Enable-Feature /FeatureName:IIS-ApplicationInit /Quiet /NoRestart".
This stems from an intermittent failure of a core Windows service to enable a performance-related feature within IIS, and may appear whether the feature is already enabled or not. It can be confirmed by checking whether the following item is enabled in the Windows Features list (item namings may vary between editions and variants of Windows):
Internet Information Services > World Wide Web Services > Application Development Features > Application Initialization
In general, no remediation beyond confirming that this Windows feature has been enabled is required.