Getting [0xC3EC78D8] error when trying to install Office Communications Server 2007 R2
You get one of the following error messages when trying to install Office Communications Server 2007 R2:
"Failure [0xC3EC78D8] Failed to read the Office Communications Server version information. This can happen if the computer clock is not set to correct date and time."
--- OR ---
"[0xC3EC796C] One or more errors occurred during execution of the wizard; the wizard was unable to complete successfully. Please check the log file for more information."
Note: the date and time on the server are correct.
The issue is caused by KB974571 (MS09-056: Vulnerabilities in CryptoAPI could allow spoofing):
Security Update for Windows Server 2003 (KB974571)
Uninstall this update and reboot the server to resolve this.
Microsoft Windows 2003
Microsoft Windows 2008
Microsoft Windows 2008 R2
Office Communications Server (OCS) 2007 R2