ERROR_INVALID_SEGMENT_NUMBER - 180 (0xB4)
The system detected a segment number that was not correct.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_INVALID_SEGMENT_NUMBER is a generic error code indicating that the system encountered an invalid segment number. Segment numbers are used in segmented memory models, which were common in older operating systems and programming environments but are not typically utilized in modern Windows versions.
Error Details
This error can occur when a program or driver attempts to access memory using a segment number that is outside the valid range or does not correspond to any defined segment. The exact context in which this error occurs depends on the specific operation being performed and the underlying system architecture.
Usage Context
The ERROR_INVALID_SEGMENT_NUMBER can be encountered in various scenarios, such as:
- Memory management operations
- Driver interactions with hardware that uses segmented memory models
- Legacy software running under compatibility modes
Developer Interpretation
When encountering this error, developers should consider the following aspects of their code or application:
- Ensure that all segment numbers used are within valid ranges.
- Verify that any legacy code or drivers using segmented memory models are correctly configured and do not conflict with modern system requirements.
- Check for compatibility issues when running applications in environments where segmented memory is not supported.
Related Errors
FAQ
Q: What does the ERROR_INVALID_SEGMENT_NUMBER mean?
A: It indicates that an invalid segment number was detected during a memory access operation.
Q: How can I resolve this error?
A: Ensure that all segment numbers used in your application or drivers are valid and within the expected range. Review any legacy code for compatibility issues.
Summary
The ERROR_INVALID_SEGMENT_NUMBER is a generic error indicating an invalid segment number was detected during memory access operations. Developers should ensure their applications and drivers handle segmented memory correctly, especially when dealing with legacy systems or environments that support such models.