如何修復win命令提示符中的'目錄名稱無效”錯誤

檢查路徑中的拼寫錯誤或非法字符，確保使用反斜杠並避免使用 : " | ? *等字符；2. 確認目標驅動器或目錄存在，若切換驅動器需使用cd /d命令；3. 運行chkdsk C: /f /r修復文件系統錯誤並恢復壞扇區；4. 縮短過長路徑或將文件夾移近根目錄，或通過組策略或註冊表啟用Win32長路徑支持；5. 避免使用CON、PRN、AUX等保留名稱作為文件夾名；6. 重啟命令提示符並從根目錄逐步導航以排除環境變量或當前目錄設置問題。該錯誤通常由路徑無效、驅動器未連接或系統損壞引起，按步驟排查即可解決。

The "The directory name is invalid" error in Windows Command Prompt usually means the system can't recognize or access the folder path you're trying to use. This can happen for several reasons — from simple typos to deeper system issues. Here's how to fix it.

1. Check the Path for Typos or Invalid Characters

Make sure the directory path you're entering is correct.

• Double-check spelling, slashes ( \ vs / ), and drive letters.
• Use backslashes ( \ ) in Windows paths (eg, C:\Users\Name\Documents ).
• Avoid invalid characters like: : " | ? *
• Don't include trailing spaces or periods in folder names.

✅ Example of correct usage:

 cd C:\Users\YourName\Desktop

❌ This may fail:

 cd C:/Users/YourName/Desktop (forward slashes may not work in some cases)

2. Verify the Drive or Directory Exists

The drive or folder might not exist or was disconnected.

• If you're switching drives (eg, D: ), make sure the drive is connected (like a USB or external drive).
• Type dir to list contents and confirm the folder is there.
• Use cd /d D:\YourFolder to change both drive and directory at once.

?️ Try:

 D:

Then:

 cd YourFolder

Or in one step:

 cd /d D:\YourFolder

If the drive doesn't exist, Windows can't access the directory — hence the error.

3. Fix Corrupted File System or Bad Sectors

Sometimes the file system itself is corrupted.

? Run CHKDSK to check and repair:

1. Open Command Prompt as Administrator .
2. Run:

    chkdsk C: /f /r

   Replace C: with the affected drive letter.

   • /f fixes errors.
   • /r recovers bad sectors.

? Note: If the drive is in use, it will ask to schedule the scan on reboot — press Y , then restart your PC.

4. Shorten Long or Deep Paths

Windows has a default path length limit of 260 characters (MAX_PATH).

If your folder path is too long (eg, C:\very\deep\nested\folder\... ), it may trigger the error.

✅ Solutions:

• Rename parent folders to shorter names.
• Move the folder closer to the root (eg, copy to C:\Project ).
• Enable long path support in Windows 10/11:
  1. Open Group Policy Editor ( gpedit.msc ) or Registry Editor .
  2. Go to:
     Computer Configuration > Administrative Templates > System > Filesystem > NTFS
  3. Enable Enable Win32 long paths . Or in the registry:

      HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem

     Set LongPathsEnabled to 1 .

5. Avoid Reserved Names and Virtual Paths

You can't use certain reserved names as folder names, like:

• CON , PRN , AUX , NUL , COM1 , LPT1 , etc.

? So this will fail:

 cd C:\CON

Also, don't use virtual paths like \\?\ unless you know what you're doing.

6. Check for Hidden System Issues

Sometimes environment variables or current directory settings are corrupted.

?️ Try resetting CMD:

• Close Command Prompt.
• Reopen it (don't navigate automatically to a bad path).
• Start fresh with C: then cd \ to go to root.

Or try:

 cd \

Then navigate step by step.

Summary – Quick Fixes to Try

• [ ] Check for typos in the path.
• [ ] Confirm the drive (eg, D:, E:) is connected.
• [ ] Use cd /d to change drive and directory together.
• [ ] Run chkdsk if the drive has errors.
• [ ] Shorten long folder paths.
• [ ] Avoid reserved names like CON , AUX .
• [ ] Enable long path support if needed.

Basically, this error is about Windows not being able to resolve the directory you're asking for — either because it doesn't exist, is unreachable, or the path is malformed. Go step by step, and it's usually easy to fix.

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