When installing the HL Accelerator on BizTalk Server 2009, BizTalk Server 2010, or BizTalk Server 2013, the following error occurs:

The specified account "Domain\AccountName" is invalid. Error code: The handle is invalid.



  1. Uninstall http://support.microsoft.com/kb/2871997
  2. Restart the server.
  3. Install HL7.
  4. Reinstall http://support.microsoft.com/kb/2871997


This is being investigated by the BizTalk product group. In the meantime, these steps should work if the 2871997 update applies to your server.