https://tlstest.paypal.com endpoint has been provided by PayPal to verify that your systems can support the latest security standards. This endpoint supports all of the security standards to which the PayPal endpoints are moving.

The following is Classic ASP code you can visit https://github.com/paypal/TLS-update for other languages.

 strResponse =  Request.Form(“encResp”)
destURL = “https://tlstest.paypal.com”
Set http_obj = Server.CreateObject(“WinHTTP.WinHTTPRequest.5.1”)
http_obj.open “POST”, destURL , false
http_obj.setRequestHeader “Content-type”, “application/x-www-form-urlencoded”
WinHttpRequestOption_SslErrorIgnoreFlags=4
http_obj.option (9) = 2720    
http_obj.send

decResponse = http_obj.ResponseText

response.Write decResponse

You can try changing 2720  DWORD value of  SecureProtocols to any of the following to see the error messages

Possible Vaules: Combinations of Secure Protocols:

0 => Do not use secure protocols

8 => Only Use SSL 2.0

32 => Only Use SSL 3.0

40 => SSL 2.0 and Use SSL 3.0

128 => Only Use TLS 1.0

136 => Use SSL 2.0 and TLS 1.0

160 => Use SSL 3.0 and TLS 1.0

168 => Use SSL 2.0, SSL 3.0 and TLS 1.0

512 => Only use TLS 1.1

520 => Use SSL 2.0 and TLS 1.1

544 => Use SSL 3.0 and TLS 1.1

552 => Use SSL 2.0, SSL 3.0 and TLS 1.1

640 => TLS 1.0 and TLS 1.1

648 => Use SSL 2.0, TLS 1.0 and TLS 1.1

672 => Use SSL 3.0, TLS 1.0 and TLS 1.1

680 => Use SSL 2.0, SSL 3.0, TLS 1.0 and TLS 1.1

2048 => Only use TLS 1.2

2056 => Use SSL 2.0 and TLS 1.2

2080 => Use SSL 3.0 and TLS 1.2

2088 => Use SSL 2.0, SSL 3.0 and TLS 1.2

2176 => TLS 1.0 and TLS 1.2

2184 => Use SSL 2.0, TLS 1.0 and TLS 1.2

2208 => Use SSL 3.0, TLS 1.0 and TLS 1.2

2216 => Use SSL 2.0, SSL 3.0, TLS 1.0 and TLS 1.2

2560 => TLS 1.1 and TLS 1.2

2568 => Use SSL 2.0, TLS 1.1 and TLS 1.2

2592 => Use SSL 3.0, TLS 1.1 and TLS 1.2

2600 => Use SSL 2.0, SSL 3.0, TLS 1.1 and TLS 1.2

2688 => TLS 1.0, TLS 1.1 and TLS 1.2

2696 => Use SSL 2.0, TLS 1.0, TLS 1.1 and TLS 1.2

2720 => Use SSL 3.0, TLS 1.0, TLS 1.1 and TLS 1.2

2728 => Use SSL 2.0, SSL 3.0, TLS 1.0, TLS 1.1 and TLS 1.2