Error 0x80010115

Value: -2147417835 | 0x80010115 | 2147549461

What does it mean ?

RPC_S_CALLPENDING  
OLE has sent a request and is waiting for a reply.
Value: 277 | 0x0115 | 0b0000000100010101

Where does it come from ?

FACILITY_RPC  
RPC subsystem
Value: 1 | 0x001 | 0b00000001

Other Errors for FACILITY_RPC