|The event log entries suggest that your DCOM permissions are broken:
When this issue occurs, error events that resemble one or more of the following may be logged in the System log:
Event ID 10022
Description: The machine-default access security descriptor for the COM Server application D:\exchsrvr\bin\mad.exe is invalid. It contains access control entries with permissions that are invalid. This security permission can be corrected using the Component Services administrative tool.
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