【QT】error: Failed to retrieve MSVC Environment from "\VC\vcvarsall.bat":

安装QT后直接打开，报错。

需要删mysql环境变量。

error: Failed to retrieve MSVC Environment from "D:\Englishpath\VS2013\VC\vcvarsall.bat": 'MYSQL' is not recognized as an internal or external command, operable program or batch file. 'MYSQL' is not recognized as an internal or external command, operable program or batch file.

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加入三个路径到系统环境变量。

C:\Windows\System32

C:\Windows

C:\Windows\System32\Wbem

还是不行。

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参考：如何解决Failed to retrieve MSVC Environment from XXXXXXXX - 湛蓝玫瑰 - 博客园 https://www.cnblogs.com/blueroses/p/8310341.html

把系统环境变量path下的有关mysql的全删了。

ok。