참조 URL : http://support.microsoft.com/kb/2512597?wa=wsignin1.0
Claims to Windows Token Service (c2WTS) not starting after rebooting server
The solution is to make sure that Cryptographic Services Service is guaranteed to start before c2WTS starts by explicitly adding the dependency in the service definition. These steps will add the dependency:
1. Open the command-prompt window.
2. Type: sc config c2wts depend= CryptSvc
3. Find the Claims to Windows Token Service in the services console (click Start | Run | services.msc).
4. Open the properties for the service.
5. Check the Dependencies tab. Make sure Cryptographic Services is listed.
6. Click OK.