Turbopack Error: failed to write to C:\Users\naray_kse\Desktop\FOOD-NEXTJS\.next\static\chunks\_afa2cdcd._.js

[narayana2607]

Turbopack version: c8cf55f4
Next.js version: 0.0.0

Error message:

failed to write to C:\Users\naray_kse\Desktop\FOOD-NEXTJS\.next\static\chunks\_afa2cdcd._.js

Caused by:
- The requested operation cannot be performed on a file with a user-mapped section open. (os error 1224)

[augustocesarperin]

The file is locked by another process (often OneDrive/Dropbox sync, AV, or a second next dev). Stop the dev server and kill any stray Node processes:

taskkill /F /IM node.exe

Pause OneDrive/Dropbox or add an AV exclusion for the project (or just .next). Then wipe the build and start fresh:

rmdir /s /q .next
npm run dev -- --turbo

If it still happens, try without Turbopack to confirm it was a lock

[CoderDeltaLAN]

Context

• Windows 10/11
• Next.js 14.x with Turbopack
• Error: failed to write ... .next\static\chunks\... (os error 1224)

Cause
On Windows this error is almost always a file lock:

• OneDrive/Dropbox sync
• Antivirus/Defender scanning .next
• Editors holding file handles
• Deep project paths (NTFS + long paths)

Fix (minimum viable)

1. Kill stray processes:

   taskkill /f /im node.exe
   taskkill /f /im code.exe

2. Clean and reinstall:

   rmdir /s /q .next
   rmdir /s /q node_modules
   del package-lock.json
   npm ci

3. Move the project to a short path (e.g. C:\src\next-app) to avoid Windows MAX_PATH issues.
4. Exclude the project folder from Windows Defender or AV:
   • Docs: https://learn.microsoft.com/windows/security/threat-protection/microsoft-defender-antivirus/configure-exclusions-microsoft-defender-antivirus
5. Check permissions:

   icacls . /grant %USERNAME%:F /t

6. Rebuild:

   npm run build

   If it still fails, try:

   npm run dev -- --turbo

   or disable Turbopack temporarily:

   npm run dev

Notes

• This is a Windows-specific file lock, not a bug in your code.
• Docs: Turbopack

If this solves it, please Mark as answer so others can find it.