ERROR_UNKNOWN_REVISION 0x80070519

Error code 1305 · HRESULT 0x80070519

WINDOWS

The revision level is unknown.

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_UNKNOWN_REVISION is a Windows error code (system error 1305, returned as HRESULT 0x80070519) reported by Windows. Its official message is: “The revision level is unknown.”

How to fix ERROR_UNKNOWN_REVISION

  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_NULL_LM_PASSWORDERROR_REVISION_MISMATCHERROR_LOCAL_USER_SESSION_KEYCBS_E_STORE_CORRUPTION0x800F09880x800F09500x800F0954WU_E_DOWNLOAD_FAILED

Source: Microsoft WinError.h

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