ERROR_INVALID_LDT_OFFSET - 563 (0x233)
Indicates that the starting value for the LDT information was not an integral multiple of the selector size.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_INVALID_LDT_OFFSET with the numeric value 563 and hexadecimal representation 0x233 is returned when an operation involving Local Descriptor Table (LDT) information fails due to a misalignment issue. Specifically, it indicates that the starting value for LDT information was not an integral multiple of the selector size.
Error Details
The LDT in Windows operating systems plays a crucial role in managing memory and providing protection mechanisms. Each entry in the LDT is referred to as a selector, which contains various attributes such as base address, limit, and access rights. The selector size is a fixed value determined by the system architecture.
When an operation requires information from the LDT, it expects that the starting offset of this information aligns with the selector size. If the provided offset does not meet this requirement, the error ERROR_INVALID_LDT_OFFSET is generated to indicate the misalignment issue.
Usage Context
This error can occur in scenarios where the operating system or a specific application attempts to access LDT information that is improperly aligned. Common contexts include kernel operations, device driver interactions, and certain API calls that require precise alignment of LDT entries.
Developer Interpretation
Developers should interpret this error as an indication that there was an issue with the alignment of LDT information during a specific operation. This misalignment could be due to incorrect parameter values or improper usage context. It is essential for developers to ensure that any operations involving LDT information are aligned correctly according to the selector size.
Related Errors
- ERROR_INVALID_PARAMETER: Indicates an invalid input parameter, which might lead to this error if the alignment issue is caused by a misaligned parameter.
- ERROR_BAD_LENGTH: Suggests incorrect length or size of data, which could also contribute to the misalignment problem.
FAQ
Q: What does ERROR_INVALID_LDT_OFFSET mean?
A: It indicates that the starting value for LDT information was not an integral multiple of the selector size during a specific operation.
Q: How can I troubleshoot this error?
A: Review the context in which the operation is being performed and ensure that all parameters are correctly aligned according to the selector size.
Summary
The ERROR_INVALID_LDT_OFFSET error code signifies an alignment issue with LDT information. Developers should focus on ensuring proper parameter values and correct usage contexts to avoid this error. Understanding the implications of this error is crucial for maintaining system stability and performance in Windows environments.