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  • 3292114
  • 10-Apr-2007
  • 30-Apr-2012


Novell ZENworks Patch Management - ZPM


Error seen in the application event logs and Agent log:
Head failed to hosthttps://MyServerDNSEntry: Head request failed. Error is 12037. ., head return=0x1109, HTTP Error=0

Error seen in the debug.log:
The Agent Uniqueness check failed


The Update Agent for Windows uses the Microsoft API "WINHTTP" which displays the standard list of error codes from the API.The error code being returned from the WinHttp is "12037":

Indicates that a required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file, or that the validity periods of the certification chain do not nest correctly (equivalent to a CERT_E_EXPIRED or a CERT_E_VALIDITYPERIODNESTING error).

Check the SSL Web Certificate using a Web Brower and verify if there are any types of SSL Certificate Warning. According to the Error Message, the SSL Certificate is expired.