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FTP Error -69 - The SSL Remote Certificate Failed Verification

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Ubaidullah:
Hi Bruce,

When connecting to an FTP server using Explicit SSL over port 21, I am getting the following error:

The error number was -69 which means The SSL Remote Certificate Failed Verification.

Command = user

I thought it might be due to CARoot.pem being old, so I downloaded the latest from Mozilla but the error still persists.

I am able to connect to this same server using Total Commander without any issue, so the issue seems to be from my side.

I will appreciate your guidance on how to resolve this.

Thanks.

Bruce:
I'd need to see the connection to be sure.
Send me the name of the server. (I don't need a login.)

cheers
Bruce

Ubaidullah:
The server is at: b2bmft.cat.com

Regards,
Ubaidullah Nubar.

Bruce:
so the certificate common name does not match the server name you are using. So set;
    FtpControl.SSLCertificateOptions.DontVerifyRemoteCertificateCommonName = 1
    FtpData.SSLCertificateOptions.DontVerifyRemoteCertificateCommonName = 1

Cheers
Bruce

Ubaidullah:
I am still getting the same error.

I placed the code you suggested before the call to thisFtpControl.GetRemoteFile

thisFtpControl.SSLCertificateOptions.DontVerifyRemoteCertificateCommonName = 1
thisFtpData.SSLCertificateOptions.DontVerifyRemoteCertificateCommonName = 1


Any other suggestions to resolve this ?

Regards,
Ubaidullah Nubar.

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