An error may occur in a network admin/service account where there are group policies implemented on the network accounts. The COM error you may see is:
"Retrieving the COM class factory for component with CLSID {ID} failed due to the following error: 80070005 Access is denied"
A resolution for correcting this error is available in the document below.
Download KBArticle00064_DCOMSecuritySettings.pdf
Link to this article http://umango.com/KB?article=64