After rebooting the operating system BizTalk Server 2010 services, in my case: “BizTalk Service BizTalk Group: BizTalkServerApplication” fails to start automatically, despite being configured to do so.
This is a Microsoft known Issues with BizTalk Runtime forcing us to manually start the services.
I was hoping that BizTalk 2010 CU2 released in August 31, 2011 resolved this problem, but no such luck.
SOLUTION
In Services.msc set the “Startup type” to “Automatic (Delayed Start)” option in this services:
This behaviour also occurs in BizTalk 2009 and 2006 R2. The solution is the same you should change the start up types for the BizTalk services on all the BizTalk machines in the group to Automatic (Delayed Start).
原文：http://www.cnblogs.com/chinajsks/p/4276270.html