您好，


请尝试：if（1）不生效，做（2）...
$
（1）  修复Visual Studio 2017

https://docs.microsoft.com/en-us/visualstudio/install / repair-visual-studio



（2）  卸载Visual Studio

https://docs.microsoft.com/en-us/visualstudio/install/uninstall-visual-studio



问候，

Hi,

Please try: if (1) does not take effect, do (2)...
(1) Repair Visual Studio 2017
https://docs.microsoft.com/en-us/visualstudio/install/repair-visual-studio

(2) Uninstall Visual Studio
https://docs.microsoft.com/en-us/visualstudio/install/uninstall-visual-studio

Regards,