ERR_SOCKET_SEND_BUFFER_SIZE_UNCHANGEABLE -163

Net error -163

BROWSER

Failed to set the socket's send buffer size as requested, despite success return code from setsockopt.

Browser error page with a network error code and a checklist of likely causes
Browser network errors: rule out your connection first, then the site.

What it means

ERR_SOCKET_SEND_BUFFER_SIZE_UNCHANGEABLE is a Browser error code reported by Google Chrome, Microsoft Edge and other Chromium browsers. Its official message is: “Failed to set the socket's send buffer size as requested, despite success return code from setsockopt.”

How to fix ERR_SOCKET_SEND_BUFFER_SIZE_UNCHANGEABLE

  1. Reload the page once — single transient failures heal themselves immediately
  2. Flush DNS: 'ipconfig /flushdns' on Windows, 'dscacheutil -flushcache' on macOS
  3. Disable VPN, proxy settings and your antivirus web shield, then retry
  4. Test the same page from mobile data or another device to isolate YOUR setup from the site
  5. Bypass performance extensions: open a private window, disable ad-blockers and retry

Related errors

ERR_SOCKET_NOT_CONNECTEDERR_SOCKET_RECEIVE_BUFFER_SIZE_UNCHANGEABLEERR_SOCKET_SET_SEND_BUFFER_SIZE_ERRORERR_SOCKET_SET_RECEIVE_BUFFER_SIZE_ERRORERR_SSL_CLIENT_AUTH_CERT_BAD_FORMATERR_ICANN_NAME_COLLISIONERR_SSL_UNRECOGNIZED_NAME_ALERT

Source: Chromium net_error_list.h

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