我有一个网站通过https调用网络API，一切都在C＃.net中，并且它工作得很好，直到API的提供商更改了证书以删除SSL并且我开始得到：
Authentication failed because the remote party has closed the transport stream.
在我添加的修复程序之后：
ServicePointManager.SecurityProtocol =
SecurityProtocolType.Tls |
SecurityProtocolType.Tls11 |
SecurityProtocolType.Tls12;
为了只允许使用tls密码，一切都在本地使用我在实时环境中调用的相同URL工作正常，但在实时服务器上我仍然得到：
Authentication failed because the remote party has closed the transport stream.
我确保代码更新，应用程序池被回收，Tls协议在注册密钥上启用。
有人有什么建议吗？这个API是公共第三方的
OPENSSL调用以检索证书：
$ openssl s_client -showcerts -connect ws.purple-parking.com:443
CONNECTED(00000003)
depth=0 /1.3.6.1.4.1.311.60.2.1.3=GB/2.5.4.15=Private Organization/serialNumber=
02341479/C=GB/ST=MIDDLESEX/L=Southall/O=Purple Parking Limited/CN=www.purpleparking.com
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 /1.3.6.1.4.1.311.60.2.1.3=GB/2.5.4.15=Private Organization/serialNumber=
02341479/C=GB/ST=MIDDLESEX/L=Southall/O=Purple Parking Limited/CN=www.purpleparking.com
verify error:num=27:certificate not trusted
verify return:1
depth=0 /1.3.6.1.4.1.311.60.2.1.3=GB/2.5.4.15=Private Organization/serialNumber=02341479/C=GB/ST=MIDDLESEX/L=Southall/O=Purple Parking Limited/CN=www.purpleparking.com
verify error:num=21:unable to verify the first certificate
verify return:1
---
Certificate chain
0 s:/1.3.6.1.4.1.311.60.2.1.3=GB/2.5.4.15=Private Organization/serialNumber=023
41479/C=GB/ST=MIDDLESEX/L=Southall/O=Purple Parking Limited/CN=www.purpleparking.com
i:/C=US/O=thawte, Inc./CN=thawte EV SSL CA - G3
-----BEGIN CERTIFICATE-----
MIIGnTCCBYWgAwIBAgIQFINUUfQAQ/jRmnwUyl5IODANBgkqhkiG9w0BAQsFADBE
MQswCQYDVQQGEwJVUzEVMBMGA1UEChMMdGhhd3RlLCBJbmMuMR4wHAYDVQQDExV0
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MbPO1SuLlS0jBI7XEpreNAA=
-----END CERTIFICATE-----
1 s:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)06/CN=VeriSign Class 3 Extended Validation SSL SGC CA
i:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=(c) 2006 VeriSign, Inc.
- For authorized use only/CN=VeriSign Class 3 Public Primary Certification Authority - G5
-----BEGIN CERTIFICATE-----
MIIGHjCCBQagAwIBAgIQLEjdkw31WY75PJlUemDtQzANBgkqhkiG9w0BAQUFADCB
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-----END CERTIFICATE-----
2 s:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=(c) 2006 VeriSign, Inc.
- For authorized use only/CN=VeriSign Class 3 Public Primary Certification Authority - G5
i:/C=US/O=VeriSign, Inc./OU=Class 3 Public Primary Certification Authority
-----BEGIN CERTIFICATE-----
MIIE0DCCBDmgAwIBAgIQJQzo4DBhLp8rifcFTXz4/TANBgkqhkiG9w0BAQUFADBf
MQswCQYDVQQGEwJVUzEXMBUGA1UEChMOVmVyaVNpZ24sIEluYy4xNzA1BgNVBAsT
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tOxFNfeKW/9mz1Cvxm1XjRl4t7mi0VfqH5pLr7rJjhJ+xr3/
-----END CERTIFICATE-----
---
Server certificate
subject=/1.3.6.1.4.1.311.60.2.1.3=GB/2.5.4.15=Private Organization/serialNumber=
02341479/C=GB/ST=MIDDLESEX/L=Southall/O=Purple Parking Limited/CN=www.purpleparking.com
issuer=/C=US/O=thawte, Inc./CN=thawte EV SSL CA - G3
---
No client certificate CA names sent
---
SSL handshake has read 5457 bytes and written 444 bytes
---
New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA
Server public key is 2048 bit
Compression: NONE
Expansion: NONE
SSL-Session:
Protocol : TLSv1
Cipher : DHE-RSA-AES256-SHA
Session-ID: F286D708BDD3413C688722CCC5C89DA65217668DF16739C6495A8EF4216B3C76
Session-ID-ctx:
Master-Key: 806065D476B184621B040B4E6E9E384BEDECF90551946E6B68AB6ABA530C5C208735676C249F06E56D081062017660E4
Key-Arg : None
Start Time: 1435830533
Timeout : 300 (sec)
Verify return code: 21 (unable to verify the first certificate)
---
read:errno=0
答案 0 :(得分：0)
问题是服务器，没有R2服务包的Windows 2008不支持高于v1.0的TLS