Finaly...

Thanks to H Ogawa...here is the solution...
This solution is ...

・Windows 2008 Server x64

Please make this folder.

C:\Windows\SysW OW64\config\sys temprofile\Desk top

・Windows 2008 Server x86

Please make this folder.

C:\Windows\Syst em32\config\sys temprofile\Desk top

...instead of dcomcnfg.exe....

some bad news

Guys I belive this problem is more complex than simple changing the DCOM identity and/or service credentials. This works fine on pre-Vista/Windows2008 but not on Vista and I belive Windows2008 server since they probably share the same architectural concepts. The issue is within the new OS design: the services are now running in complete isolation (session 0) by the interactive desktop (session1), created by the first...