Error 0x80070702

Value: -2147023102 | 0x80070702 | 2147944194

What does it mean ?

ERROR_REDIRECTOR_HAS_OPEN_HANDLES  
The redirector is in use and cannot be unloaded.
Value: 1794 | 0x0702 | 0b0000011100000010

Where does it come from ?

FACILITY_WIN32  
Provides a way to handle error codes from functions in the Win32 API as an HRESULT. (Error codes in 16 - bit OLE that duplicated Win32 error codes have also been changed to FACILITY_WIN32)
Value: 7 | 0x007 | 0b00000111

Other Errors for FACILITY_WIN32