Wait on the Database Engine recovery handle failed. Check the SQL Server error log for potential causes.

One of the SQL Server 2008 upgrade process hampered with the error on the subject line and following text box was displayed: For some reason the similar issue hasn't been displayed when Upgrade Advisor has been chosen to find the first hand issues, as per http://sqlserver-qa.net/blogs/tools/archive/2008/01/22/upgrade-blurg.aspx and http://sqlserver-qa.net/blogs/tools/archive/tags/upgrade+advisor/default.aspx posts here. Coming to the root cause of the issue one of the KBA refers that .... this issue...(<a href="http://sqlserver-qa.net/blogs/sql2008/archive/2009/12/07/6140.aspx">read more</a>)<img src="http://sqlserver-qa.net/aggbug.aspx?PostID=6140" width="1" height="1">