Error 0xC800051F

Value: -939522785 | 0xC800051F | 3355444511

What does it mean ?

hrTooManyOpenTables  
Unable to open any more tables.
Value: 1311 | 0x051F | 0b0000010100011111

Where does it come from ?

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

Other Errors for FACILITY_NTDSB