Shoutbox

I've never heard of Cryptographic Service before, but my guess is that it is a Windows Service. Services are programs, but run in a special way (which I'm not sure of).

You can change settings for services in the Services Management Console. To open it, you click Start > Run and then type services.msc in the box and click OK (I'm not sure of this because my computer isn't working properly so I can't test it).

In Services, in the right hand side pane, look for Cryptographic Service in the list (there will be heaps of services). You might have to scroll the list to find it. Click it, and then, in the left pane, observe the status of the service. If it's running, restart it, and if it isn't running, start it.