ERROR_PATCH_REMOVAL_UNSUPPORTED - 1646 (0x66E)
Uninstallation of the update package is not supported.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_PATCH_REMOVAL_UNSUPPORTED with the numeric value 1646 and hexadecimal representation 0x66E indicates that an attempt has been made to uninstall a specific update package, but this operation is not supported by the system or the software.
Error Details
This error typically occurs when an application or system component attempts to remove an update package that was installed through a patching mechanism. The underlying reason for the unsupported removal could be due to various factors such as the nature of the update, its dependencies, or the current state of the system.
Usage Context
The ERROR_PATCH_REMOVAL_UNSUPPORTED error can appear in scenarios where an application or service tries to revert changes made by a patch. This might happen during software maintenance, updates, or when troubleshooting issues related to recently installed patches.
Developer Interpretation
Developers should interpret this error as indicating that the current operation is not feasible due to limitations imposed by the system or the nature of the update package. The application should handle such errors gracefully and provide appropriate feedback to the user, possibly suggesting alternative actions or reporting the issue for further investigation.
Related Errors
FAQ
Q: What does the error code 1646 mean?
A: The error code 1646, or ERROR_PATCH_REMOVAL_UNSUPPORTED, indicates that an attempt to uninstall a specific update package is not supported by the system.
Q: How can I resolve this issue?
A: Typically, resolving this issue involves ensuring that the operation context and parameters are correct. If the error persists, it may be necessary to consult the documentation or support resources for the application or service in question.
Summary
The ERROR_PATCH_REMOVAL_UNSUPPORTED error code (1646) signifies that an attempt to uninstall a specific update package is not supported by the system. Developers should handle this error gracefully and provide appropriate feedback to users, possibly suggesting alternative actions or reporting the issue for further investigation.