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Windows Server 2008 Class not registered issues

If you can see something like this error:

Exception: System.Runtime.InteropServices.COMException (0x80040154): Retrieving the COM class factory for component with CLSID {78530B75-61F9-11D2-8CAD-00A024580902} failed due to the following error: 80040154 Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))

you must install "Desktop Experience" feature.