How to fix Error 275 on Windows 11

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Troubleshooting Guide: Error 275 – “The Extended Attributes Did Not Fit In The Buffer”

Why This Error Happens

Error 275 occurs when the extended attributes (EAs) associated with a file or directory exceed the size of the buffer allocated by the calling application or system process to read them. This typically happens due to file system corruption, a mismatch between NTFS metadata and the application requesting it, or legacy compatibility issues when handling files with unusually large EA structures (often inherited from OS/2 or older third-party software). It can also surface when copying files between different NTFS volumes or during specific API calls (like NtQueryEaFile) that use a fixed, undersized buffer.

Step-by-Step Resolution Guide

  1. Run CHKDSK to Repair File System Errors
    Corruption in the Master File Table (MFT) is the most common cause. Open Command Prompt as Administrator and run:
   chkdsk C: /f /r

Restart your PC if prompted to schedule the scan on the next boot.

  1. Check and Clear Extended Attributes via PowerShell
    Identify the specific file causing the issue and attempt to strip its extended attributes:
   Get-Item -Path "C:\Path\To\File" -Stream *

If EAs are listed beyond :$DATA, isolate the file and try removing the alternate data streams using:

   Remove-Item -Path "C:\Path\To\File" -Stream <StreamName>

  1. Update or Reinstall the Application Triggering the Error
    If the error is tied to a specific app (e.g., a backup tool or file copier), ensure it’s updated to the latest version, as many older 32-bit applications use fixed-size buffers that don’t account for modern NTFS EA structures. Reinstalling the app can reset any corrupted configuration files causing the mismatched buffer size.

  2. Copy the File Using Robocopy Instead of Standard Copy
    Standard File Explorer copy operations sometimes fail to handle EAs correctly. Use Robocopy, which handles NTFS metadata more robustly:

   robocopy "C:\Source" "D:\Destination" "filename.ext" /COPYALL /R:1 /W:1
  1. Verify Disk Health and Drivers
    Outdated storage drivers can misreport buffer sizes to the OS. Go to Device Manager > Disk Drives, right-click your drive, select Update Driver, and choose Search automatically for drivers.

Alternative or Verification Steps

  • Verify the Fix: After running CHKDSK and Robocopy, attempt to open, copy, or move the previously affected file. If Error 275 no longer appears in Event Viewer (under Windows Logs > System), the buffer issue has been resolved.
  • Alternative Solution: If the error persists on a specific file, try extracting the file’s data without its metadata by opening it in a hex editor or converting it to a new file format, effectively stripping the problematic extended attributes.