Certificate Services Client Provider pautoenr.dll raised an exception. Exception code 3221225477.

My 2008 server recently started generating the above error pretty consistantly along with a matching entry that reads:

Faulting application taskeng.exe, version 6.0.6002.18342, time stamp 0x4cd34898, faulting module ntdll.dll, version 6.0.6002.19346, time stamp 0x55023e3e, exception code 0xc000071b, fault offset 0x000000000007ec45, process id 0x30c0, application start time 0x01d0a5efdc22516e.

Does anyone have any idea as to the ramifications of these errors and any possible solutions?
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David Johnson, CD, MVPOwnerCommented:
It is a really involved procedure to fix this as there are many edits to do.
Here are the first 6 steps
First, pull up Task Scheduler from Administrative Tools.  Select “Task Scheduler Library” and open Microsoft\Windows\CertificateServicesClient.   We are going to disable each of the three tasks before we delete the cache.  On each task, SystemTask, UserTask and UserTask-Roam, right-click and select End.  Repeat this for each task and select Disabled.
Follow these steps to delete the certificate cache on the server:  Go to the LOCAL SYSTEM profile at C:\Windows\System32\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache.  Copy the CryptNetURLCache folder to a safe place.  Two folders are there—Content and Metadata.   Go to each folder and delete the files therein—don’t delete the Content and Metadata folders themselves.
Run Regedit as an administrator and go to this key, HKEY_LOCAL_MACHINE\Software\Microsoft\SystemCertificates\AuthRoot\Certificates.  Delete all the keys under this key.   That takes care of the certificate cache.
Now, delete the Autoenrollment cache.  Go to Regedit and to HKEY_LOCAL_MACHINE\Software\Microsoft\Cryptography\AutoEnrollment\AEDirectoryCache.  Delete all the keys under that key.
Go back to Task Scheduler.  Open the CertificateServicesClient folder that we had opened before (Task Scheduler Library\Microsoft\Windows\CertificateServicesClient).  Right-click on each task and select “Enable”.

The remaining steps are located @

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Windows Server 2008

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