Error 0x80040406

Value: -2147220474 | 0x80040406 | 2147746822

What does it mean ?

DS_E_SERVERCAPACITY  
The request cannot be processed, because the system is low on resources. Try again later, or contact your system administrator to free up system resources.
Value: 1030 | 0x0406 | 0b0000010000000110
MS_E_BUSY  
The sample is busy.
Value: 1030 | 0x0406 | 0b0000010000000110

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

Other Errors for FACILITY_ITF