ERROR_INSTALL_DEREGISTRATION_FAILURE - 15607 (0x3CF7)
Package could not be unregistered.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_INSTALL_DEREGISTRATION_FAILURE with the numeric value 15607 and hexadecimal representation 0x3CF7 indicates a failure in the process of unregistrating or deregistering an installed package. This typically occurs during software installation, upgrade, or uninstallation processes where the system attempts to remove references to a package.
Error Details
The specific error message associated with this code is: Package could not be unregistered. This suggests that there was an issue preventing the successful removal of certain components or dependencies related to the package in question.
Usage Context
This error can occur in various contexts, such as during a software uninstallation process, when attempting to remove a package via Windows Installer, or when executing commands that require unregistration of installed packages. The exact context will depend on the operation being performed and the specific package involved.
Developer Interpretation
Developers should interpret this error code as an indication that there was a failure in the deregistration process for a particular package. This could be due to various reasons, such as incomplete or corrupted installation files, insufficient permissions, or conflicts with other installed software. The error does not provide specific details about the cause but serves as a general indicator of a problem during the unregistration phase.
Related Errors
- ERROR_INSTALL_FAILURE (1603) - General failure in the installation process.
- ERROR_INSTALL_PACKAGE_INVALID (1608) - The package is invalid or corrupted.
- ERROR_INSTALL_PACKAGE_NOT_FOUND (1625) - The specified package could not be found.
FAQ
Q: What does ERROR_INSTALL_DEREGISTRATION_FAILURE mean?
A: It indicates a failure in the unregistration process of an installed package, typically during uninstallation or upgrade processes.
Q: How can I resolve this error?
A: Review the operation context and ensure that all necessary permissions are available. Verify the integrity of the installation files and retry the operation with valid inputs.
Summary
The ERROR_INSTALL_DEREGISTRATION_FAILURE (15607, 0x3CF7) is a generic error code indicating a failure in unregistration during package management operations. Developers should treat this as an indication that there was a problem preventing successful deregistration and should investigate the specific context to determine the root cause.