I faced an issue with IIS when trying to see the available application pools. But the IIS tree seems to be empty.
To solve this issue:
1- Close the IIS
2- Open the Services (click Start, click Control Panel, double-click Administrative Tools, and then double-click Services.
) or if on windows server go to Administartive tools from Start and then services.
3- Stop the IIS Admin service and then start it and make sure to stop and start the services that depends on it too.
4- Open the IIS the application pools will be there.