ERROR_PATCH_PACKAGE_INVALID - 1636 (0x664)
This update package could not be opened. Contact the application vendor to verify that this is a valid Windows Installer update package.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_PATCH_PACKAGE_INVALID error indicates that a Windows Installer update package could not be opened or processed. This error is typically encountered during the installation of software updates, where the installer encounters issues with the provided patch file.
Error Details
This error code suggests that there might be an issue with the integrity or format of the update package. The specific conditions under which this error occurs can vary depending on the nature of the update and the environment in which it is being installed.
Usage Context
The ERROR_PATCH_PACKAGE_INVALID error is commonly encountered during software installation processes, particularly when using Windows Installer (msi) packages for updates or installations. It may also appear when attempting to apply patches through other mechanisms that rely on the Windows Installer service.
Developer Interpretation
Developers should interpret this error as an indication that the update package provided is not in a valid format or contains corrupted data, making it unsuitable for installation. The error message suggests contacting the application vendor to ensure that the update package is correctly formatted and intended for use with the specific version of Windows being targeted.
Related Errors
ERROR_INVALID_DATA(0x13A) - Indicates invalid data in a file or structure.ERROR_BAD_EXE_FORMAT(0x457) - Occurs when an executable is not recognized as valid by the system.
FAQ
Q: What does the ERROR_PATCH_PACKAGE_INVALID error mean?
A: This error indicates that the update package could not be opened or processed, likely due to corruption or invalid format. Contact the application vendor for a valid update package.
Q: How can I resolve this issue?
A: Verify the integrity of the update package and ensure it is compatible with your version of Windows. If necessary, contact the application vendor for assistance.
Summary
The ERROR_PATCH_PACKAGE_INVALID error (0x664) signifies that a Windows Installer update package could not be opened or processed due to corruption or invalid format. Developers should interpret this as an indication of potential issues with the provided update and seek further guidance from the application vendor.