In addition to the subject error, the System event log may record:

Event Type: Error                               Event Source: DCOM                               Event Category: None                               Event ID: 10017                               Date: MM/DD/YYYY                              Time: HH:MM:SS                              User: <User Name>                              Computer: <Computer Name>                              Description: The application-specific permission settings do not grant Activation permission for the                                           COM Server application with CLSID \{DA3111BC-1BD7-4884-A535-8470D36028F7\} to the user                                           <User Name> SID <User SID>. This security permission can be modified using the                                           Component Services administrative tool.
To fix this problem, you must reset the DCOM permissions for the Authenticated Users group:

01. Open Component Services from the Administrative Tools folder of the Start menu.

02. Expand Component Services.

03. Expand Computers.

04. Expand My Computer.

05. Expand DCOM Config.

06. Right-click Virtual Server and press Properties.

07. Select the Security tab.

08. Press Customize in the Launch and Activation Permissions area.

09. Press Edit.

10. In the Group or user names list, press Authenticated Users.

11. Select the Allow box for Launch Permission in the Permissions for Authenticated Users list and press OK.

12. Press Customize in the Access Permissions area.

13. Press Edit.

14. In the Group or user names list, press Authenticated Users.

15. Select the Allow box for Access Permission in the Permissions for Authenticated Users list and press OK.

16. Press Apply.

17. Press OK.

18. Close Component Services.