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User cannot connect to Serv-U and the management console freezes

Learn how to resolve issue with users not connecting to Serv-U and management console freezing

First published date

5/15/2019 8:13 PM

Last published date

5/15/2019 8:13 PM

Overview

In some cases, Serv-U suddenly stops working unknown reason. When a user tries to log in using FTPS on port 990, it just shows the following error below using Filezilla.

"Connection established, waiting for a welcome message"

Serv-U logs also show the following:

"Unable to establish SSL connection (CLIENT ERROR: Client may have rejected the SSL certificate)"

After getting this error, Serv-U Management console will become unresponsive and the only way to get access is to restart the service. Reinstalling Serv-U and reconfiguring the server settings from scratch does not help. Even reconfiguring the user settings.

Product section

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

Cause

The server where the home directory resides lost connection to the domain controller so it is not accessible from Serv-U server

Resolution

Do the test on the local server using FTP client or command line
This is to isolate possible network communication issue
Create a test account and set the home directory on the local drive
If the home directory set to a UNC path, make sure it is accessible from Serv-U server
Make sure Serv-U service account has permission to the home directory UNC path

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