[winerror 206] 文件名或扩展名太长

MIster jashon

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Oct 03, 2024

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Understanding and Resolving "WinError 206: 文件名或扩展名太长"

The error message "WinError 206: 文件名或扩展名太长" (Filename or extension is too long) is a common issue in Windows systems. It arises when you try to create, rename, or move a file or folder with a name exceeding the maximum allowed character limit. This error can be frustrating, especially when you're working with large files or complex directory structures.

Why Does This Error Occur?

Windows has a built-in limitation on the maximum length of a file path, including the directory structure and file name. This limitation is designed to maintain file system efficiency and prevent potential errors. The maximum length for a file path in Windows is 260 characters.

How to Identify the Problem

1. Check the File Path: Carefully examine the full path of the file or folder you're trying to access. This includes the drive letter, directory structure, and the file or folder name. Count the total characters in the path.
2. Identify Long Filenames or Directory Names: Locate any file or folder names that are unusually long. Remember that spaces also count as characters.

Resolving "WinError 206"

Here are several approaches to tackle this error:

1. Shorten File Names:

• Rename the File or Folder: This is the most straightforward solution. Choose a shorter name for your file or folder. Keep it descriptive but concise.
• Rename Directories: If the file path is long due to nested directories, consider renaming parent directories to make them shorter.

2. Use Short Path Syntax:

Windows provides an alternative path syntax known as the "Short Path" format. This format uses the 8.3 naming convention (e.g., "Program Files" becomes "PROGRA~1"). You can access this format using the following methods:

• Command Prompt: Open the Command Prompt and use the dir /x command to display the short names of files and folders.
• Windows Explorer: In the "Address Bar" of Windows Explorer, you can type the short path format directly.

3. Utilize File System Redirection:

This approach involves creating a symbolic link, also known as a junction point, that redirects the long path to a shorter one. This allows you to access the file or folder with a shorter path without actually changing its original name.

4. Move to a Different Location:

If the file or folder is within a deeply nested directory structure, consider moving it to a location with a shorter path.

Example:

Let's say you have a file called "My Extremely Long File Name.txt" located in the following directory:

C:\Users\Username\Documents\My Project\Subfolder\My Extremely Long File Name.txt

This path length exceeds the 260-character limit. To fix this:

• Option 1: Rename the file: Change the filename to something like "MyFile.txt".
• Option 2: Shorten the directory structure: Rename "My Project" to "Project" or "My Extremely Long File Name.txt" to "LongFile.txt" and move the file to a new folder with a shorter name.
• Option 3: Use short path syntax: Access the file using the command prompt with "C:\Users\Username\Documents\My Pr~1\Subfold~1\LongFile.txt".

Additional Tips:

• Be Mindful of File Paths: Always try to keep file names and directory paths as concise as possible.
• Use File Compression: Compressing files can often reduce the size of their names.
• Use a File Manager: Some file managers offer tools for working with long file paths, such as showing short path names or providing a "short path" option.

Conclusion:

Encountering the "WinError 206" error can be frustrating, but understanding its origin and employing the right strategies will help you resolve it effectively. Remember that by following these tips and best practices, you can prevent this error from occurring in the future.