Repository: flutter
Issue: [desktop]: flutter cannot find insalled VS toolchain
Labels: tool,platform-windows,P3,team-tool,triaged-tool

**vswhere output:**
```console
C:\Program Files (x86)\Microsoft Visual Studio\Installer>vswhere -format json -utf8 -latest
[
  {
    "instanceId": "4a6c651e",
    "installDate": "2021-04-09T20:28:32Z",
    "installationName": "VisualStudio/16.9.3+31129.286",
    "installationPath": "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community",
    "installationVersion": "16.9.31129.286",
    "productId": "Microsoft.VisualStudio.Product.Community",
    "productPath": "C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Community\\Common7\\IDE\\devenv.exe",
    "state": 4294967295,
    "isComplete": true,
    "isLaunchable": true,
    "isPrerelease": false,
    "isRebootRequired": false,
    "displayName": "Visual Studio Community 2019",
    "description": "Powerful IDE, free for students, open-source contributors, and individuals",
    "channelId": "VisualStudio.16.Release",
    "channelUri": "https://aka.ms/vs/16/release/channel",
    "enginePath": "C:\\Program Files (x86)\\Microsoft Visual Studio\\Installer\\resources\\app\\ServiceHub\\Services\\Microsoft.VisualStudio.Setup.Service",
    "releaseNotes": "https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.9#16.9.3",
    "thirdPartyNotices": "https://go.microsoft.com/fwlink/?LinkId=660909",
    "updateDate": "2021-04-09T20:28:32.2139537Z",
    "catalog": {
      "buildBranch": "d16.9",
      "buildVersion": "16.9.31129.286",
      "id": "VisualStudio/16.9.3+31129.286",
      "localBuild": "build-lab",
      "manifestName": "VisualStudio",
      "manifestType": "installer",
      "productDisplayVersion": "16.9.3",
      "productLine": "Dev16",
      "productLineVersion": "2019",
      "productMilestone": "RTW",
      "productMilestoneIsPreRelease": "False",
      "productName": "Visual Studio",
      "productPatchVersion": "3",
      "productPreReleaseMilestoneSuffix": "1.0",
      "productSemanticVersion": "16.9.3+31129.286",
      "requiredEngineVersion": "2.9.3365.38425"
    },
    "properties": {
      "campaignId": "",
      "channelManifestId": "VisualStudio.16.Release/16.9.3+31129.286",
      "nickname": "",
      "setupEngineFilePath": "C:\\Program Files (x86)\\Microsoft Visual Studio\\Installer\\setup.exe"
    }
  }
]
```

**flutter doctor output:**

<details> 
<summary>flutter doctor -v</summary> 

```bash
C:\Program Files (x86)\Microsoft Visual Studio\Installer>flutter doctor -v
[√] Flutter (Channel beta, 2.1.0-12.2.pre, on Microsoft Windows [Version 10.0.18363.1379], locale en-US)
    • Flutter version 2.1.0-12.2.pre at C:\temp\flutter
    • Framework revision 5bedb7b1d5 (4 weeks ago), 2021-03-17 17:06:30 -0700
    • Engine revision 711ab3fda0
    • Dart version 2.13.0 (build 2.13.0-116.0.dev)

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.0-rc4)
    • Android SDK at C:\Users\vgoldshteyn\AppData\Local\Android\sdk
    • Platform android-30, build-tools 30.0.0-rc4
    • Java binary at: C:\temp\android-studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
    • All Android licenses accepted.

[√] Chrome - develop for the web
    • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[X] Visual Studio - develop for Windows
    X Visual Studio not installed; this is necessary for Windows development.
      Download at https://visualstudio.microsoft.com/downloads/.
      Please install the "Desktop development with C++" workload, including all of its default components

[√] Android Studio (version 4.1.0)
    • Android Studio at C:\temp\android-studio
    • Flutter plugin can be installed from:
       https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
       https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[√] IntelliJ IDEA Community Edition (version 2019.3)
    • IntelliJ at C:\temp\ideaIC\2018.3
    • Flutter plugin version 43.0.3
    • Dart plugin version 193.5731

[√] VS Code (version 1.52.1)
    • VS Code at C:\Users\vgoldshteyn\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension can be installed from:
       https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[√] Proxy Configuration
    • HTTP_PROXY is set
    • NO_PROXY is localhost,127.0.0.1
    • NO_PROXY contains 127.0.0.1
    • NO_PROXY contains localhost

[√] Connected device (2 available)
    • Windows (desktop) • windows • windows-x64    • Microsoft Windows [Version 10.0.18363.1379]
    • Chrome (web)      • chrome  • web-javascript • Google Chrome 81.0.4044.138

! Doctor found issues in 1 category.
```
	
</details>