MarkdownPad2不能用Github在线样式渲染，提示：“请求被中止: 未能创建 SSL/TLS 安全通道”

Question

MarkdownPad2不能用Github在线样式渲染，
只知道MarkdownPad调用的是https://api.github.com/这个AP...，之前还好好的，现在全部不能用，换了好几台电脑都不行。
用Github的风格之后，预览界面就会提示：
“请求被中止: 未能创建 SSL/TLS 安全通道”

Answer 1

markdown pad2 无法使用gihub Markdown在线风格，提示“请求被中止: 未能创建 SSL/TLS 安全通道”

1. 首先要确认是否安装了 .Net Framework 4.5以上，若没有，点此下载
2. 桌面新建txt, 重命名为123.reg，使其变成注册表，然后写入以下内容，双击运行即可。

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319]
"SchUseStrongCrypto"=dword:00000001

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\.NETFramework\v4.0.30319]
"SchUseStrongCrypto"=dword:00000001

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作者：布尔bl
来源：CSDN
原文：https://blog.csdn.net/qq18938...
版权声明：本文为博主原创文章，转载请附上博文链接！

Answer 2

see this thread for how to work around this:
GFM online mode SSL/TLS secure channel aborts

my understanding is that MDP2 is built with .NET Framework v4.0, which doesn't support TLS 1.2 or use it by default.

but if you have .NET Framework 4.5 installed, you can update some registry settings and restart MDP2 and GitHub Flavoured Markdown Online starts working again

Make the following changes in your Registry and it should work:

1.) .NET Framework strong cryptography registry keys

[HKEY_LOCAL_MACHINESOFTWAREMicrosoft.NETFrameworkv4.0.30319]
"SchUseStrongCrypto"=dword:00000001

[HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoft.NETFrameworkv4.0.30319]
"SchUseStrongCrypto"=dword:00000001
2.) Secure Channel (Schannel) TLS 1.2 registry keys

[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2]

[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Client]
"DisabledByDefault"=dword:00000000
"Enabled"=dword:00000001

[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Server]
"DisabledByDefault"=dword:00000000
"Enabled"=dword:00000001