Peer certificate rejected exception :: Support Forum

terrence Guest

Peer certificate rejected exception

2012-05-31 09:11

HI,
I installed 5.0 beta WinSCP and reference Winscp.dll use C# code, but I can't connect to server successfully.
Throws exception -->

WinSCP.sessionRemoteException:peer certificate rejected .

What's problem, who can help me?

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sangeethu Guest

Re: peer certificate rejected exceptio

2012-06-06 02:58

Even I am facing the same problem. Please let me know whether you resolved this issue.

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 41,378
Location:: Prague, Czechia

Re: peer certificate rejected exceptio

2012-06-08

Make sure you set SessionOptions.SslCertificate (renamed to TlsHostCertificateFingerprint in the later versions) to accept the untrusted certificate:
https://winscp.net/eng/docs/library_sessionoptions

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MrRanger Guest

What Vaue would you set it to

2012-08-15 02:47

What value would you set it to in order to accept the untrusted certificate

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martin◆ Site Admin

Re: What Vaue would you set it to

2012-08-16

@MrRanger: Fingerprint of the untrusted certificate.

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MasieroR Guest

Re: What Vaue would you set it to

2012-10-05 17:59

Hi,
I've the same problem.
I set the SessionOptions.SslHostCertificateFingerprint with the fingerprint of the untrusted certificate, but when I try to open the session, the application freeze and I've to kill the app.

Thank you.

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MasieroR Guest

Re: What Vaue would you set it to

2012-10-05 23:01

Installing the latest version (5.1) the problem does not recur.
Thank you.

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Guest

Re: Peer Certificate Rejected,, Connection Failed

2020-11-27 09:11

I was able to make my code run by settings

SessionOptions.GiveUpSecurityAndAcceptAnyTlsHostCertificate = true

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martin◆ Site Admin

Re: Peer Certificate Rejected,, Connection Failed

2020-11-27

@Guest: As written above, the correct solution is to set SessionOptions.TlsHostCertificateFingerprint:
https://winscp.net/eng/docs/library_sessionoptions#tlshostcertificatefingerprint

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