Once the Search Service application has been created and when we go to the Search Administration page, if everything went well, we should see tick mark against the installed search components. However there can be instances where we come across the error “Unable to retrieve topology component health states. This may be because the admin component is not up and running”.

There are multiple reasons that can cause this issue. One of the reasons for this, is an issue with the ‘Usage and Health data collection’ service application. Ensure that the service application is created from the service applications page.

If it is not created, launch the Configuration Wizard.

Now in some cases the Usage service application will be created but might be in stopped state. In order to get it running, run the below Power Shell script.
- $Usage = Get-SPServiceApplicationProxy | where {$_.TypeName -like "Usage*"}
- $Usage.Provision()

Thus we saw how to resolve the ‘Admin Component is not up and running’ issue in SharePoint Search.

Mary HumphreyPosted Oct 31, 2021, 5:32 PM
Priyaranjan, everything I have tried still will not start the SharePoint Search Host Controller and so also the topology will not run either. Could you provide some assistance?