Error 0xC8000069

Value: -939523991 | 0xC8000069 | 3355443305

What does it mean ?

hrTooManyIO  
The system is busy because there are too many I/Os.
Value: 105 | 0x0069 | 0b0000000001101001

Where does it come from ?

FACILITY_NTDSB  
Active Directory Domain Services
Value: 2048 | 0x800 | 0b100000000000

Other Errors for FACILITY_NTDSB