Unable to connect to FTP server on Plesk via FileZilla: Certificate expired

Symptoms

• When connecting to the Plesk server via FileZilla using a specific IP address, e.g. 203.0.113.2, the information about an expired SSL certificate appears.

  

• A valid SSL certificate is selected in Plesk at Tools & Settings > IP Addresses > 203.0.113.2 > SSL/TLS certificate field.

Cause

The expired SSL certificate is still used for securing the IP address in IIS.

This is a Plesk bug with ID PPPM-13940.

Resolution

1. Connect to the Plesk server via RDP.

2. Start Internet Information Services (IIS) Manager at Windows Strat > All Programs > Windows Administrative Tools.

3. In IIS Manager, expand Sites > click on the IP address in question > FTP SSL Settings (under FTP).

4. Choose a valid SSL certificate from the drop down menu under SSL certificate.

5. Click Apply.

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