Test Lab Guide: Deploying an AD CS Two-Tier PKI Hierarchy

Hi,

Following this guide

http://technet.microsoft.com/library/hh831348.aspx

Questions:

1) I installed Exchange 2013 into this PKI on its own VM and tried to create a certificate for it using the APP1 or ORCA1, but all the certificates are saying "INVALID". How can I fix this problem.

2) "The OID shown in the example is the Microsoft OID. Individual organizations should obtain their own OIDs. For more information about OIDs, see "

I got an OID as xxxxx (5 digit) not x.x.x.x.xxxx.xx.xx.x