Complete Network Reset: Open Command Prompt as Administrator
👇 See all 2 solutions belowWhat is Error 6009?
Windows System Error Code 6009, known as ERROR_FILE_READ_ONLY, is a Networking error that occurs during advanced networking, Winsock, and IPSec. The error indicates that: The specified file is read only. When this error is encountered, the Windows operating system was unable to complete the requested operation within the networking stack subsystem. The error code 6009 is returned by the GetLastError() function and provides developers with a specific identifier to diagnose the root cause of the failure. The symbolic name ERROR_FILE_READ_ONLY maps directly to this numeric code and is commonly referenced in Microsoft documentation, developer forums, and system logs. Understanding this error and its context within advanced networking, Winsock, and IPSec is essential for effective troubleshooting.
Common Causes
- System resource conflict: The specified file is read only.
- Network driver outdated/incompatible
- TCP/IP stack corruption
- IP configuration incorrect
Resolving Component Store (WinSxS) Bloat and Corruption
An encyclopedia on the Windows Component Store: safely reclaiming disk space, understanding hard links, and fixing deep WinSxS corruption.
Read the full guide →Step-by-Step Solutions
- Open Command Prompt as Administrator
- Run: netsh winsock reset && netsh int ip reset
- Run: ipconfig /release && ipconfig /renew
- Restart your computer
Video Tutorials
Diagnostic Command
Run this PowerShell command to find related events in your system log:
Get-EventLog -LogName System -Newest 20 | Where-Object {$_.Message -like "*6009*" -or $_.Message -like "*ERROR_FILE_READ_ONLY*"} | Format-List💡 Open PowerShell as Administrator, paste the command above, and press Enter.
Prevention Tips
- Update drivers from manufacturer site
- Monitor network utilization
- Document network configuration