ERROR_FILE_READ_ONLY 0x80071779

Error code 6009 · HRESULT 0x80071779

WINDOWS

The specified file is read only.

Windows troubleshooting diagram: Device Manager warning and a system file scan
Windows errors: check drivers, system files and Event Viewer, in that order.

What it means

ERROR_FILE_READ_ONLY is a Windows error code (system error 6009, returned as HRESULT 0x80071779) reported by Windows. Its official message is: “The specified file is read only.”

How to fix ERROR_FILE_READ_ONLY

  1. Verify the path/file actually exists and is not blocked by antivirus quarantine
  2. Reinstall the application that raised the error to restore missing files
  3. Check the full path spelling (long paths >260 chars need a registry opt-in)

Related errors

ERROR_FILE_CORRUPTERROR_FILE_NOT_FOUNDERROR_FILE_NOT_ENCRYPTEDERROR_FILE_ENCRYPTEDERROR_NOT_EXPORT_FORMATERROR_DIR_EFS_DISALLOWEDERROR_EFS_SERVER_NOT_TRUSTED

Source: Microsoft WinError.h

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