ERROR_SINGLE_INSTANCE_APP 0x80070480

Error code 1152 · HRESULT 0x80070480

WINDOWS

Cannot start more than one instance of the specified program.

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_SINGLE_INSTANCE_APP is a Windows error code (system error 1152, returned as HRESULT 0x80070480) reported by Windows. Its official message is: “Cannot start more than one instance of the specified program.”

How to fix ERROR_SINGLE_INSTANCE_APP

  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_APP_WRONG_OSERROR_RMODE_APPERROR_OLD_WIN_VERSIONWSAEADDRINUSEWSAECONNABORTEDWSAECONNRESETWSAETIMEDOUTWSAECONNREFUSED

Source: Microsoft WinError.h

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