Electron, electron-builder, nsis, remove SchTasks at uninstall

Question

I made an app that is running with Admin Privileges. To run the app at windows startup I made an SchTasks, but at uninstall I want to remove it. The closest I could get is:

;script used to remove the auto launch scheduled task

!macro customUnInstall
  ExpandEnvStrings $0 %COMSPEC%
  ExecWait `"$0" /c "SchTasks /Delete /TN task_name /F & pause"`
!macroend

But it returns ERROR: Access is denied. . This is because the uninstall doesn't have admin priv. What should I do, should I try to make the uninstall to be executed with admin priv? Or there is another way to remove the task?

Another option in my mind is to make the task to delete it self if the executable is not in path.

The electron package.json I am using:

"win": {
  "target": [
    "nsis"
  ],
  "requestedExecutionLevel": "requireAdministrator"
},
"nsis": {
  "include": "installer/windows/uninstall.nsh",
  "allowElevation": true,
  "deleteAppDataOnUninstall": true
},

Answer 1

我对 Electron-builder 一无所知，但我知道如果安装程序脚本具有RequestExecutionLevel Admin那么卸载程序也会在 Vista+ 上请求提升。

Answer 2

Here is my solution, in nsh file.

!macro customHeader
   RequestExecutionLevel admin
!macroend

!macro customUnInstall
${ifNot} ${isUpdated}
    ; remove the scheduled task
    ExpandEnvStrings $0 %COMSPEC%
    ExecWait `"$0" /c "SchTasks /Delete /TN name /F"`

    ; delete registry for uninstaller - run as admin
    SetRegView 64
      DeleteRegValue HKCU "SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers" "$LOCALAPPDATA\Programs\name\Uninstall name.exe"
    SetRegView 32
      DeleteRegValue HKCU "SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers" "$LOCALAPPDATA\Programs\name\Uninstall name.exe"
  ${endIf}
!macroend

package.json

"win": {
  "target": [
    "nsis"
  ],
  "requestedExecutionLevel": "requireAdministrator"
},
"nsis": {
  "include": "installer/windows/installer.nsh",
  "allowElevation": true,
  "deleteAppDataOnUninstall": true,
  "artifactName": "${productName}.${ext}"
},

Answer 3

As mentioned in the documentation , you need to add the following to your electron-builder.json (or the build section of your package.json ) to elevate your installer:

"nsis": {
    "allowElevation": true
}

Answer 4

I found another way, but it will break your "one click" installation:

"build": {
    "nsis": {
      "include": "./build/installer.nsh",
      "oneClick": false,
      "perMachine": true,
      "warningsAsErrors": false
    }
  },

Key thing: oneClick false + perMachine true