SSL: Error During Handshake: 80090308

This can occur if the remote host does not support implicit SSL.

Date Entered: 04/07/2008    Last Updated: 10/24/2017

This is frequently seen when using FTPS (FTP over SSL), but can occur under other conditions as well.

If the component is configured to connect to the remote host in implicit SSL mode, but the server is expecting explicit SSL, the SSL handshake will fail with this message.

To resolve this set the SSLStartMode property to sslExplicit, or change the RemotePort property value to a port you know is accepting implicit SSL connections.

Note that if you're using a proxy server this may be an indication that your proxy server does not support SSL.

The above information is often enough to resolve the error. If for some reason it does not, please refer to this error's section in our article on Common Windows Security Errors


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