title: Android clean failed occurred starting process 'command 'cmd''
body: <p><a href="https://i.stack.imgur.com/sDUhX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/sDUhX.png" alt="enter image description here"></a>Every time that I try to clean my project that error pops up, I already tried to disable instant run, I'm using Android Studio 2.2.2, what could be wrong? </p>
  
  <p><strong>Output in Messages window:</strong></p>
  
  <pre><code>Information:Gradle tasks [clean, :app:generateDebugSources, :app:mockableAndroidJar, :app:prepareDebugUnitTestDependencies, :app:generateDebugAndroidTestSources]
  Error:Execution failed for task ':clean'.
  &gt; A problem occurred starting process 'command 'cmd''
  </code></pre>
  
  <p><strong>Output in Gradle Console window:</strong></p>
  
  <pre><code>Configuration on demand is an incubating feature.
  Incremental java compilation is an incubating feature.
  :clean FAILED
  
  FAILURE: Build failed with an exception.
  
  * What went wrong:
  Execution failed for task ':clean'.
  &gt; A problem occurred starting process 'command 'cmd''
  
  * Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
  
  BUILD FAILED
  
  Total time: 19.881 secs
  </code></pre>
  
  <p><strong>Exception:</strong></p>
  
  <pre><code> org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':clean'.
          at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:69)
          at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
          at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
          at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:66)
          at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:58)
          at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:52)
          at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
          at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:53)
          at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
          at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:203)
          at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:185)
          at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.processTask(AbstractTaskPlanExecutor.java:66)
          at org.gradle.execution.taskgraph.AbstractTaskPlanExecutor$TaskExecutorWorker.run(AbstractTaskPlanExecutor.java:50)
          at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:25)
          at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:110)
          at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:37)
          at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
          at org.gradle.execution.DefaultBuildExecuter.access$000(DefaultBuildExecuter.java:23)
          at org.gradle.execution.DefaultBuildExecuter$1.proceed(DefaultBuildExecuter.java:43)
          at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
          at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:37)
          at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:30)
          at org.gradle.initialization.DefaultGradleLauncher$4.run(DefaultGradleLauncher.java:153)
          at org.gradle.internal.Factories$1.create(Factories.java:22)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:53)
          at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:150)
          at org.gradle.initialization.DefaultGradleLauncher.access$200(DefaultGradleLauncher.java:32)
          at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:98)
          at org.gradle.initialization.DefaultGradleLauncher$1.create(DefaultGradleLauncher.java:92)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:91)
          at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:63)
          at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:92)
          at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:83)
          at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:99)
          at org.gradle.tooling.internal.provider.runner.BuildModelActionRunner.run(BuildModelActionRunner.java:46)
          at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
          at org.gradle.tooling.internal.provider.runner.SubscribableBuildActionRunner.run(SubscribableBuildActionRunner.java:58)
          at org.gradle.launcher.exec.ChainingBuildActionRunner.run(ChainingBuildActionRunner.java:35)
          at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:48)
          at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:30)
          at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:81)
          at org.gradle.launcher.exec.ContinuousBuildActionExecuter.execute(ContinuousBuildActionExecuter.java:46)
          at org.gradle.launcher.daemon.server.exec.ExecuteBuild.doBuild(ExecuteBuild.java:52)
          at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
          at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
          at org.gradle.launcher.daemon.server.exec.WatchForDisconnection.execute(WatchForDisconnection.java:37)
          at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
          at org.gradle.launcher.daemon.server.exec.ResetDeprecationLogger.execute(ResetDeprecationLogger.java:26)
          at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
          at org.gradle.launcher.daemon.server.exec.RequestStopIfSingleUsedDaemon.execute(RequestStopIfSingleUsedDaemon.java:34)
          at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
          at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:74)
          at org.gradle.launcher.daemon.server.exec.ForwardClientInput$2.call(ForwardClientInput.java:72)
          at org.gradle.util.Swapper.swap(Swapper.java:38)
          at org.gradle.launcher.daemon.server.exec.ForwardClientInput.execute(ForwardClientInput.java:72)
          at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
          at org.gradle.launcher.daemon.server.health.DaemonHealthTracker.execute(DaemonHealthTracker.java:47)
          at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
          at org.gradle.launcher.daemon.server.exec.LogToClient.doBuild(LogToClient.java:60)
          at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
          at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
          at org.gradle.launcher.daemon.server.exec.EstablishBuildEnvironment.doBuild(EstablishBuildEnvironment.java:72)
          at org.gradle.launcher.daemon.server.exec.BuildCommandOnly.execute(BuildCommandOnly.java:36)
          at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
          at org.gradle.launcher.daemon.server.health.HintGCAfterBuild.execute(HintGCAfterBuild.java:41)
          at org.gradle.launcher.daemon.server.api.DaemonCommandExecution.proceed(DaemonCommandExecution.java:120)
          at org.gradle.launcher.daemon.server.exec.StartBuildOrRespondWithBusy$1.run(StartBuildOrRespondWithBusy.java:50)
          at org.gradle.launcher.daemon.server.DaemonStateCoordinator$1.run(DaemonStateCoordinator.java:237)
          at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:54)
          at org.gradle.internal.concurrent.StoppableExecutorImpl$1.run(StoppableExecutorImpl.java:40)
      Caused by: org.gradle.process.internal.ExecException: A problem occurred starting process 'command 'cmd''
          at org.gradle.process.internal.DefaultExecHandle.setEndStateInfo(DefaultExecHandle.java:197)
          at org.gradle.process.internal.DefaultExecHandle.failed(DefaultExecHandle.java:327)
          at org.gradle.process.internal.ExecHandleRunner.run(ExecHandleRunner.java:86)
          ... 2 more
      Caused by: net.rubygrapefruit.platform.NativeException: Could not start 'cmd'
          at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:27)
          at net.rubygrapefruit.platform.internal.WrapperProcessLauncher.start(WrapperProcessLauncher.java:36)
          at org.gradle.process.internal.ExecHandleRunner.run(ExecHandleRunner.java:68)
          ... 2 more
      Caused by: java.io.IOException: Cannot run program "cmd" (in directory "/Documents/AndroidProjects/agro-geral/repository_app_agro_nelson"): error=2, No such file or directory
          at net.rubygrapefruit.platform.internal.DefaultProcessLauncher.start(DefaultProcessLauncher.java:25)
          ... 4 more
      Caused by: java.io.IOException: error=2, No such file or directory
          ... 5 more
  </code></pre>
  
  <p><strong>build.gralde</strong></p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  repositories {
      maven { url "https://jitpack.io" }
  }
  
  android {
      compileSdkVersion 23
      buildToolsVersion "23.0.3"
      defaultConfig {
          applicationId "myid"
          minSdkVersion 16
          targetSdkVersion 22
          versionCode 7
          versionName "2.0.2"
          multiDexEnabled true
      }
      buildTypes {
          release
                  {
                      minifyEnabled false
                      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
                      resValue 'string', 'maps_v2_api_key', 'mykey'
                  }
      }
      productFlavors {
      }
  
      dexOptions {
          javaMaxHeapSize "4g"
      }
  }
  
  dependencies {
      compile fileTree(include: ['*.jar'], dir: 'libs')
      testCompile 'junit:junit:4.12'
      compile files('libs/ksoap2-android-assembly-2.5.8-jar-with-dependencies.jar')
      'com.github.clans:fab:1.6.2'
      // compile 'com.android.support:appcompat-v7:24.0.0-alpha2'
      compile files('libs/httpmime-4.5.2.jar')
      //compile 'com.google.android.gms:play-services:9.0.0'
      compile files('libs/com.datecs.api.jar')
      compile 'com.android.support:multidex:1.0.0'
      compile 'com.google.android.gms:play-services-appindexing:8.1.0'
      compile 'com.google.android.gms:play-services-ads:9.0.2'
      compile 'com.google.android.gms:play-services-analytics:9.0.0'
      compile 'com.google.android.gms:play-services-auth:9.0.0'
      compile 'com.google.android.gms:play-services-gcm:9.0.0'
      compile 'com.github.clans:fab:1.6.2'
      compile 'com.google.android.gms:play-services:9.0.2'
      compile 'com.android.support:appcompat-v7:23.4.0'
      compile files('libs/additionnal.jar')
      compile files('libs/mail.jar')
  
      // retrofit, gson
      compile 'com.google.code.gson:gson:2.6.2'
      compile 'com.squareup.retrofit2:retrofit:2.0.2'
      compile 'com.squareup.okhttp3:logging-interceptor:3.3.1'
      compile 'com.squareup.retrofit2:converter-gson:2.0.2'
      compile 'com.google.guava:guava:13.0.1'
      compile ('com.afollestad.material-dialogs:core:0.8.4.2@aar'){
          transitive = true
      }
  
  
  
  }
  </code></pre>