In Windows XP or Vista, verify that DCOM Tunneling has already been enabled and is not being blocked (see Fix Error 462 article). Then go to Start > Control Panel > Administrative Tools > select Services > click the Standard tab (at bottom of screen) > double-click on Remote Procedure Call > Change the Startup Type to Automatic > Click Start under Service Status > click OK > confirm that the "Status" for Remote Procedure Call now displays Started.
Also verify that "DCOM Server Process Launcher" displays Automatic as its Startup Type in this list of Services. If not, double-click on "DCOM Server Process Launcher" and change the Startup Type to Automatic.
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