ERROR_INSTALL_UI_FAILURE 0x80070655

Error code 1621 · HRESULT 0x80070655

WINDOWS

There was an error starting the Windows Installer service user interface. Contact your support personnel.

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_INSTALL_UI_FAILURE is a Windows error code (system error 1621, returned as HRESULT 0x80070655) reported by Windows. Its official message is: “There was an error starting the Windows Installer service user interface. Contact your support personnel.”

How to fix ERROR_INSTALL_UI_FAILURE

  1. Run the Windows Update troubleshooter (Settings → System → Troubleshoot → Other tools)
  2. Reset update components: stop 'wuauserv' and 'bits', clear C:\Windows\SoftwareDistribution, restart both services
  3. Verify system file integrity with 'sfc /scannow'

Related errors

ERROR_INSTALL_ALREADY_RUNNINGERROR_INSTALL_FAILUREERROR_INSTALL_OPEN_PACKAGE_FAILEDERROR_INSTALL_RESOLVE_DEPENDENCY_FAILEDERROR_INSTALL_PACKAGE_INVALIDERROR_INSTALL_LOG_FAILUREERROR_INSTALL_PACKAGE_OPEN_FAILED

Source: Microsoft WinError.h

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