ERROR_FILENAME_EXCED_RANGE - 206 (0xCE)
The filename or extension is too long.
Updated: Feb 21, 2026
Technical Meaning
The ERROR_FILENAME_EXCED_RANGE error code, represented by the numeric value 206 or its hexadecimal equivalent 0xCE, indicates that a filename or extension exceeds the maximum allowable length in Windows. This is a specific technical mechanism designed to prevent system instability and ensure file system integrity.
Error Details
This error typically occurs when attempting to create, rename, or access a file where the combined length of the filename and its extension surpasses the maximum allowed character count. The exact limit can vary depending on the context; for instance, in Windows NTFS, the total path length (including drive letter) cannot exceed 260 characters.
Usage Context
This error is commonly encountered when working with long filenames or extensions, especially in environments where such names are frequently used. It may also arise due to certain file operations that involve deep directory structures or complex paths.
Developer Interpretation
When encountering this error, developers should ensure that the filename and extension lengths do not exceed the system's maximum allowable length. This can be achieved by shortening filenames, using shorter extensions, or optimizing directory structures to reduce path depth.
Related Errors
ERROR_PATH_NOT_FOUND(2)ERROR_FILE_EXISTS(80)ERROR_INVALID_NAME(123)
These errors may occur in conjunction with ERROR_FILENAME_EXCED_RANGE, especially when dealing with complex file paths or directory structures.
FAQ
Q: What causes the ERROR_FILENAME_EXCED_RANGE?
A: The error is caused by filenames or extensions that exceed the maximum allowable length, which can vary depending on the system and context.
Q: How can I resolve this issue?
A: Shorten the filename or extension to ensure it does not exceed the maximum allowed length. Alternatively, optimize directory structures to reduce path depth.
Summary
The ERROR_FILENAME_EXCED_RANGE error is a specific technical mechanism designed to prevent system instability by limiting the length of filenames and extensions. Developers should be mindful of this limit when working with long filenames or complex paths to ensure smooth operation.