RPC_S_CALL_IN_PROGRESS 0x800706FF

Error code 1791 · HRESULT 0x800706FF

WINDOWS

A remote procedure call is already in progress for this thread.

Windows troubleshooting diagram: Device Manager warning and a system file scan
Windows errors: check drivers, system files and Event Viewer, in that order.

What it means

RPC_S_CALL_IN_PROGRESS is a Windows error code (system error 1791, returned as HRESULT 0x800706FF) reported by Windows. Its official message is: “A remote procedure call is already in progress for this thread.”

How to fix RPC_S_CALL_IN_PROGRESS

  1. Reboot once — many one-off system codes disappear with a clean restart
  2. Repair system files: 'sfc /scannow' then 'DISM /Online /Cleanup-Image /RestoreHealth'
  3. Find the source in Event Viewer → System: filter for this exact code and open its provider link

Related errors

RPC_S_CALL_CANCELLEDRPC_S_CALL_FAILED_DNERPC_S_CALL_FAILEDERROR_TRUST_FAILUREERROR_NETLOGON_NOT_STARTEDERROR_TRUSTED_RELATIONSHIP_FAILURE

Source: Microsoft WinError.h

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