Microsoft KB Archive/246246

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Knowledge Base

Certification Authority Service Stops Working After File System Conversion

Article ID: 246246

Article Last Modified on 3/1/2007


  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Datacenter Server

This article was previously published under Q246246


The Application log may report:

Certificate Services did not start: Unable to initialize the database connection for your CA name. Class not registered 0x80040154.


The certification authority (CA) service stops running after you convert your hard disk from the FAT to the NTFS file system.


To resolve this issue, uninstall the CA service, and then reinstall it using the same CA name, key pair, and database as in the previous installation.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Keywords: kbenv kberrmsg kbprb KB246246