我这里出现此错误的原因是，搭载域名网站的服务器是windows2008 r2，配置的域名证书是TLS1.0版本，需要在服务器注册表中加入TLS的其他版本。
处理办法如下
小程序报错 TLS 版本必须大于等于 1.2 --文章所有权归
周伯通的麦田 ，以下是直接复制内容：
服务器是windows 2008 server
环境是IIS7
SSL是申请用的阿里免费。微信小程序发现wx.request,调试报错: 小程序要求的 TLS 版本必须大于等于 1.2
直接说解决办法吧：在PowerShell中运行一下代码(复制粘贴即可),PowerShell窗口打开方式可以用下面任意一种
1：开始->运行->输入 PowerShell
2：开始->所有程序->附件 找到
# Enables TLS 1.2 on windows Server 2008 R2 and Windows 7 # These keys do not exist so they need to be created prior to setting values. md "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2" md "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Server" md "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Client" # Enable TLS 1.2 for client and server SCHANNEL communications new-itemproperty -path "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Server" -name "Enabled" -value 1 -PropertyType "DWord" new-itemproperty -path "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Server" -name "DisabledByDefault" -value 0 -PropertyType "DWord" new-itemproperty -path "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Client" -name "Enabled" -value 1 -PropertyType "DWord" new-itemproperty -path "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Client" -name "DisabledByDefault" -value 0 -PropertyType "DWord" # Disable SSL 2.0 (PCI Compliance) md "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsSSL 2.0Server" new-itemproperty -path "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsSSL 2.0Server" -name Enabled -value 0 -PropertyType "DWord" # Enables TLS 1.2 on Windows Server 2008 R2 and Windows 7 # These keys do not exist so they need to be created prior to setting values. md "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2" md "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Server" md "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Client" # Enable TLS 1.2 for client and server SCHANNEL communications new-itemproperty -path "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Server" -name "Enabled" -value 1 -PropertyType "DWord" new-itemproperty -path "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Server" -name "DisabledByDefault" -value 0 -PropertyType "DWord" new-itemproperty -path "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Client" -name "Enabled" -value 1 -PropertyType "DWord" new-itemproperty -path "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsTLS 1.2Client" -name "DisabledByDefault" -value 0 -PropertyType "DWord" # Disable SSL 2.0 (PCI Compliance) md "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsSSL 2.0Server" new-itemproperty -path "HKLM:SYSTEMCurrentControlSetControlSecurityProvidersSCHANNELProtocolsSSL 2.0Server" -name Enabled -value 0 -PropertyType "DWord"
输入以上命令后直接回车
3：重启服务器(我滴重启iis好像没彻底生效)后OK，再请请求wx.request正常