ERROR_PRODUCT_VERSION 0x80070666

Error code 1638 · HRESULT 0x80070666

WINDOWS

Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel.

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_PRODUCT_VERSION is a Windows error code (system error 1638, returned as HRESULT 0x80070666) reported by Windows. Its official message is: “Another version of this product is already installed. Installation of this version cannot continue. To configure or remove the existing version of this product, use Add/Remove Programs on the Control Panel.”

How to fix ERROR_PRODUCT_VERSION

  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_PRODUCT_UNINSTALLEDERROR_PATCH_PACKAGE_UNSUPPORTEDERROR_INVALID_COMMAND_LINEERROR_PATCH_PACKAGE_INVALIDERROR_DISK_FULLERROR_SEM_TIMEOUTERROR_INVALID_NAMEERROR_MOD_NOT_FOUND

Source: Microsoft WinError.h

Last updated: