Active Directory Certificate Services could not find required registry information. The certification authority may need to be reinstalled.
To perform this procedure, you must have local Admin permission, or you must have been delegated the appropriate authority.
Caution: Incorrectly editing the registry might severely damage your system. Before making changes to the registry, you should back up any valued data.
To resolve registry-related problems:
On the computer hosting the CA, click Start, type regedit, and press ENTER.
Look for the registry configuration settings listed above and correct any incorrect values.
Click Start, point to Administrative Tools, and click Certification Authority.
Right-click the CA name, and click Restart.