SAS® Integration Technologies: Administrator's Guide (LDAP Version)

left the Authentication Level on the General tab as Default, then DCOMCNFG will store the "AuthenticationLevel"
value under the HKEY_CLASSES_ROOT\AppID\{hexadecimal−appid} key in the Windows registry with a
value of "0". This value is not defined as a supported value by the COM library (which reads these values at runtime
to determine your application's security settings). When this occurs, the symptom is "0x80070005 − Access is denied"
on the first call from the client to the IOM server.
The easiest workaround is to set the Authentication Level on the General tab to some specific value other than
"Default".
For more information about this problem, see Microsoft Knowledge Base Article 814430.
COM/DCOM
SAS® Integration Technologies: Administrator's Guide (LDAP Version)
Setting Permissions per Application on Windows XP and Windows Server 2003 75