Error: The protocol handler cannot be found. Check that the handler has been installed.

Scenario:

You will get this error, when you are trying to "Crawl" the content in SharePoint SSP.

Solution

1. Go to Services in the SharePoint server (type "Services.msc" in command prompt and preses  'Enter')

2. Stop the "SharePoint SHarePoint server search", "Windows SharePoint Services Search" & "Windows SharePoint Services" Timer.

                   

3. Start all the 3 services again.

4. Reset the IIS

Thats it...