24 September 2025

Fix: An Unexpected Error Is Keeping You from Copying the File

One of the most frustrating messages a Windows user can encounter is the error stating, “An unexpected error is keeping you from copying the file.” This message typically occurs when trying to copy or move a file from one location to another, whether it’s between folders, drives, or external devices. It’s often accompanied by an error code, which can provide clues about what’s causing the problem. However, for most users, deciphering these codes isn’t straightforward.

This issue can disrupt workflows, delay project deadlines, and cause confusion—especially if the underlying cause isn’t immediately apparent. The good news is that there are multiple solutions, depending on the source of the problem. In this article, we explore common causes and step-by-step methods to resolve the issue efficiently.

Common Causes of the Error

Before diving into specific fixes, it’s essential to understand what might be triggering the unexpected error. Some of the most frequent culprits include:

• Corrupted files: If the file you’re trying to copy is partially damaged, Windows can struggle to process it.
• Permission issues: You may lack the required administrative rights to access or move the file.
• Bad sectors on the disk: Defective storage sectors can make files unreadable or unmovable.
• File system limitations: Transferring files to a drive with a FAT32 format can fail if the file size exceeds 4GB.
• Antivirus interference: Security software may incorrectly flag a file as dangerous and block its transfer.

How to Fix “An Unexpected Error Is Keeping You from Copying the File”

1. Restart Your Computer

It might sound overly simple, but restarting your computer can clear up system glitches and release any file locks. Attempt the file copy procedure again after rebooting.

2. Run Windows File and Folder Troubleshooter

Microsoft offers a dedicated troubleshooter that can automatically identify and fix issues related to files and folders. Here’s how to use it:

1. Download Microsoft’s File and Folder Troubleshooter.
2. Run the tool and follow the on-screen instructions.
3. Retry copying the file once the process is completed.

3. Check File Permissions

Sometimes, the file or the folder it resides in has restricted access. To assume ownership of the file, follow these steps:

1. Right-click the file and select Properties.
2. Go to the Security tab and click Edit.
3. Add your user account and grant Full Control.
4. Click Apply and then OK.

4. Disable Antivirus Temporarily

Some antivirus programs are overly aggressive and may block files erroneously. Temporarily disabling them could allow the copy to go through. Make sure to enable your antivirus software again afterward.

Note: Disabling antivirus introduces risks. Only try this if you’re sure the file is safe.

5. Run Check Disk Utility

If the file resides on a faulty disk, the system might be unable to read it correctly. Use the Windows Check Disk utility:

1. Open Command Prompt as administrator.
2. Type chkdsk C: /f /r (Replace “C:” with the affected drive letter).
3. Press Enter and allow the system to check and fix errors upon reboot, if prompted.

6. Convert File System Format

If you’re trying to copy a large file to a FAT32-formatted drive, you may hit the 4GB size limit. Convert FAT32 to NTFS without data loss:

1. Open Command Prompt as administrator.
2. Type convert X: /fs:ntfs (Replace “X:” with the drive letter).

7. Use File Compression

If none of the above workarounds are suitable, try compressing the file into a ZIP or RAR format, then copy it. This can sometimes bypass copy limitations.

8. Check for Encryption

If the file is encrypted and you’re not the one who encrypted it, you may not be able to move or copy it without the proper certificate. To check if the file is encrypted:

1. Right-click on the file and choose Properties.
2. Click the Advanced button under the General tab.
3. See if Encrypt contents to secure data is checked.

If it is, you need the encryption key or certificate to copy the file.

9. Boot in Safe Mode

Some third-party applications or services might interfere with file transfer. Boot into Safe Mode and try copying the file:

1. Press Windows + R, type msconfig, and press Enter.
2. Go to the Boot tab and check Safe boot.
3. Restart your computer and try copying the file in Safe Mode.

10. Use a File Copy Utility

There are dedicated file-copy utilities like TeraCopy or Robocopy that are more robust for handling problematic or large file transfers.

Robocopy can be used from Command Prompt like so:

robocopy source_folder destination_folder filename

Preventing the Error in the Future

Once you’ve resolved the issue, consider implementing these preventative measures to avoid recurrence:

• Keep your operating system and drivers updated.
• Regularly scan your hard drives for errors.
• Backup important files to multiple locations.
• Use reliable antivirus software and keep it updated.
• Avoid sudden power-offs that might corrupt files.

Conclusion

The message “An unexpected error is keeping you from copying the file” may be vague, but the solutions are often accessible with just a bit of investigation. From adjusting file permissions to using specialized utilities, there are multiple approaches to resolve this file transfer annoyance. By taking proactive steps and understanding the possible causes, users can minimize the occurrence of this disruptive error in the future.

FAQ

• What does the error code 0x80070057 mean when copying a file?
  This error indicates invalid parameters; it may stem from corruption, file system issues, or disk problems.
• Can I recover files if the disk is damaged?
  Yes, recovery tools like Recuva or EaseUS Data Recovery Wizard can help retrieve data from bad sectors or damaged drives.
• Is it safe to disable antivirus during file operations?
  Temporarily disabling antivirus is usually safe if you trust the file, but always re-enable the software afterward to stay protected.
• Why does Safe Mode help with file copying errors?
  Safe Mode starts Windows with minimal drivers and services, eliminating third-party software interference during file operations.
• What’s the maximum file size FAT32 supports?
  FAT32 does not support files larger than 4GB. Use NTFS or exFAT for transferring or storing large files.