ERROR_INTERMIXED_KERNEL_EA_OPERATION - 324 (0x144)
An attempt was made to modify both a KERNEL and normal Extended Attribute (EA) in the same operation.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_INTERMIXED_KERNEL_EA_OPERATION (324, 0x144) indicates an attempt to modify both a KERNEL and normal Extended Attribute (EA) in the same operation. This error suggests that there is a conflict or inconsistency between the operations being performed on these attributes.
Error Details
Extended Attributes are additional metadata associated with files and directories in Windows. They can be used for storing custom information, such as file versioning data or user-defined properties. The KERNEL EAs are managed by the operating system kernel and are typically used for internal purposes, while normal EAs can be manipulated by applications.
Usage Context
This error is relevant when performing operations on files or directories that involve both types of Extended Attributes simultaneously. For example, attempting to modify a KERNEL EA and a normal EA in a single API call might trigger this error if the operation is not supported or if there are internal consistency checks that fail.
Developer Interpretation
Developers should interpret this error as an indication that the operation being attempted is invalid due to the simultaneous modification of both types of Extended Attributes. This could be caused by incorrect usage, unsupported operations, or limitations in the system's handling of these attributes.
Related Errors
ERROR_INVALID_PARAMETER(1258, 0x4E6)ERROR_NOT_SUPPORTED(1333, 0x539)ERROR_FILE_NOT_FOUND(3)
FAQ
Q: What does the ERROR_INTERMIXED_KERNEL_EA_OPERATION error mean?
A: This error indicates that an attempt was made to modify both a KERNEL and normal Extended Attribute in the same operation, which is not supported.
Q: How can I resolve this issue?
A: Ensure that operations involving only one type of EA are performed separately. If necessary, consult the documentation for specific API calls or system limitations related to Extended Attributes.
Summary
The ERROR_INTERMIXED_KERNEL_EA_OPERATION error is a specific technical indication that an operation attempting to modify both KERNEL and normal Extended Attributes simultaneously has failed. Developers should handle this error by ensuring operations are performed in a manner consistent with the supported usage of these attributes.