vs2017 卸载重新安装

vs2017 安装后出现问题，想要添加新的功能vs_installer.exe 不能打开。

查询网络得到如下结果 链接在这

Thank you for your feedback! We have fixed the problem and the bug fix will be included in an upcoming release. Thank you for helping us build a better Visual Studio! To address your maintenance issues please follow these steps...

• See if you have this file on your machine: "%programfiles(x86)%\Microsoft Visual Studio\Installer\resources\app\layout\InstallCleanup.exe" • If so, please launch it from an admin command prompt with a -full param:

InstallCleanup.exe -full

• If not, please manually delete the "%programfiles(x86)%\Microsoft Visual Studio\Installer” folder • Relaunch the newly downloaded vs_enterprise.exe (or vs_professional.exe…) • Allow the first step to install the installer • Once the installer comes up and you can see workload choices (.net desktop and the like), close it • Go launch the same InstallCleanup.exe to clean up old build of VS • Then relaunch vs_enterprise.exe and install RC