ERROR_MCA_EXCEPTION 0x80070310

Error code 784 · HRESULT 0x80070310

WINDOWS

A thread is getting dispatched with MCA EXCEPTION because of MCA.

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

ERROR_MCA_EXCEPTION is a Windows error code (system error 784, returned as HRESULT 0x80070310) reported by Windows. Its official message is: “A thread is getting dispatched with MCA EXCEPTION because of MCA.”

How to fix ERROR_MCA_EXCEPTION

  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

ERROR_MCA_OCCUREDERROR_MCA_INVALID_CAPABILITIES_STRINGERROR_MCA_INVALID_VCP_VERSIONERROR_MCA_MONITOR_VIOLATES_MCCS_SPECIFICATIONERROR_SYSTEM_POWERSTATE_COMPLEX_TRANSITIONERROR_ACCESS_AUDIT_BY_POLICYERROR_SYSTEM_POWERSTATE_TRANSITION

Source: Microsoft WinError.h

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