Error 0x00350059

Value: 3473497 | 0x00350059 | 3473497

What does it mean ?

ERROR_HV_PENDING_PAGE_REQUESTS  
The device had pending page requests which were discarded.
Value: 89 | 0x0059 | 0b0000000001011001

Where does it come from ?

FACILITY_USERMODE_HYPERVISOR  
Usermode Hypervisor components
Value: 53 | 0x035 | 0b00110101

Other Errors for FACILITY_USERMODE_HYPERVISOR