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HTTPS 501 not implemented error when accessing the web client

This article addresses an issue that generates a "501 not implemented" error when you access the web client.

First published date

10/26/2018 7:07 PM

Last published date

10/26/2018 7:07 PM

Overview

When you access the web client, the following error displays:

501 not implemented

This could be an issue with the load balancer. 

Product section

Serv-U Managed File Transfer & Serv-U FTP Server

Resolution

  1. If the HTTPS ports on the server are listening, telnet to the server and check for a response.
  2. Access the web client internally direct to the MFT server. If accessible, MFT is not an issue.
  3. Access the web client internally direct to the Serv-U Gateway. If accessible, the gateway is not an issue.
  4. If the issue occurs when accessing externally, this is a network issue. Serv-U is working properly.
  5. Check your firewall or load balancer configuration.
  6. Check the SSL offloading setting on the load balancer.
  7. Check the load balancer certificate.