- Get-SPEnterpriseSearchServiceApplication -Identity "Search Service Application"
- Stsadm -o deleteconfigurationobject -id [Guid returned from previous command]
Impossible to delete the Search Service Service Application from the Gui in SharePoint 2010
Ok, I had to get this issue as well: Corrupt Search Service application in my development environment. I was not able to delete it from Central Administration so I had to find the correct powershell comands. Clean up by runnning these two commands: