Windows 10环境下ZScaler Proxy安装Cypress失败及相关问题求助

一、安装时的证书错误 #

在Windows 10（版本10.0.19044）搭配ZScaler Cloud Connector安装Cypress 10.7.0时，出现以下下载错误：

911 error
911 error Platform: win32-x64 (10.0.19044)
911 error Cypress Version: 10.7.0
912 error [FAILED] The Cypress App could not be downloaded.
912 error [FAILED] 
912 error [FAILED] Does your workplace require a proxy to be used to access the Internet? If so, you must configure the HTTP_PROXY environment variable before downloading Cypress. Read more: https://on.cypress.io/proxy-configuration
912 error [FAILED] 
912 error [FAILED] Otherwise, please check network connectivity and try again:
912 error [FAILED] 
912 error [FAILED] ----------
912 error [FAILED] 
912 error [FAILED] URL: https://download.cypress.io/desktop/10.7.0?platform=win32&arch=x64
912 error [FAILED] Error: unable to get local issuer certificate
912 error [FAILED] 
912 error [FAILED] ----------
912 error [FAILED] 
912 error [FAILED] Platform: win32-x64 (10.0.19044)
912 error [FAILED] Cypress Version: 10.7.0
913 verbose exit 1
914 timing npm Completed in 11016ms
915 verbose unfinished npm timer reify 1661966146931
916 verbose unfinished npm timer reify:build 1661966156229
917 verbose unfinished npm timer build 1661966156230
918 verbose unfinished npm timer build:deps 1661966156230
919 verbose unfinished npm timer build:run:postinstall 1661966156255
920 verbose unfinished npm timer build:run:postinstall:node_modules/cypress 1661966156255
921 verbose code 1
922 error A complete log of this run can be found in:
922 error     C:\Users\eric\AppData\Local\npm-cache\_logs\2022-08-31T17_15_46_738Z-debug-0.log

已尝试操作：

• 设置HTTP_PROXY环境变量，值与代理脚本地址一致：

  C:\Windows\system32>echo %HTTP_PROXY%
  http://127.0.0.1:9000/systemproxy-9a8d7abc.pac
  

• 重启PowerShell后重新安装，错误依旧
• 临时关闭ZScaler服务，问题未解决

二、本地二进制包安装的局限性 #

参考方案找到临时解决办法：在cmd中执行以下命令可成功安装：

set CYPRESS_INSTALL_BINARY=C:\Users\eric\Downloads\cypress.zip
npm install cypress --save-dev

但存在以下问题：

• 在PowerShell中设置CYPRESS_INSTALL_BINARY后，该变量未出现在环境列表中，无法生效
• cmd不识别~路径，必须使用绝对路径

三、Cypress未完全卸载的问题 #

需要安装旧版本Cypress，执行npm uninstall cypress后，运行npx cypress run仍提示存在cypress.json文件（Cypress 10.0.0及以上版本不再支持该文件），说明卸载不彻底，需解决该问题。

内容的提问来源于stack exchange，提问作者Eric