微信小程序 TLS 版本必须大于等于1.2问题解决
此问题最近在微信小程序开发中，比较常见。
在解决这个问题之前，我们需要了解一下，当前的系统环境是否支持TLS1.2以上，可以参考一下表格：
确认系统支持以后，进行一下操作：
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocols] [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsMulti-Protocol Unified Hello] [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsMulti-Protocol Unified HelloClient] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsMulti-Protocol Unified HelloServer] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsPCT 1.0] [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsPCT 1.0Client] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsPCT 1.0Server] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsSSL 2.0] [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsSSL 2.0Client] "DisabledByDefault"=dword:00000001 "Enabled"=dword:00000000 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsSSL 2.0Server] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsSSL 3.0] [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsSSL 3.0Client] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsSSL 3.0Server] "Enabled"=dword:00000000 "DisabledByDefault"=dword:00000001 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.0] [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.0Client] "Enabled"=dword:00000001 "DisabledByDefault"=dword:00000000 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.0Server] "Enabled"=dword:00000001 "DisabledByDefault"=dword:00000000 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.1] [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.1Client] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.1Server] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2] [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Client] "DisabledByDefault"=dword:00000000 "Enabled"=dword:00000001 [HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Server] "Enabled"=dword:00000001 "DisabledByDefault"=dword:00000000
将以上代码，保存到一个txt文件，然后修改后缀.reg，双击执行即可，完成这一步后，重启服务器。