Flutter with installation error for %1 is not a valid win32 application

Question

I am new in the flutter and trying to install it with following steps... 1) download and unzipped in drive 2) Set path in environment variables

Now i am trying to run flutter doctor it's showing me below error please check if anyone face same issue...Thanks!

 ` [√] Flutter (Channel beta, v0.6.0, on Microsoft Windows [Version 10.0.17134.228], locale en-US)
-Unhandled exception:
ProcessException: %1 is not a valid Win32 application.

  Command: C:\Users\Rahul Mishra\AppData\Local\Android\Sdk\platform-tools\adb.EXE devices -l
#0      _ProcessImpl._runAndWait (dart:io/runtime/binprocess_patch.dart:488:7)
#1      _runNonInteractiveProcessSync (dart:io/runtime/binprocess_patch.dart:634:18)
#2      Process.runSync (dart:io/runtime/binprocess_patch.dart:66:12)
#3      LocalProcessManager.runSync (package:process/src/interface/local_process_manager.dart:83:20)
#4      _runWithLoggingSync (package:flutter_tools/src/base/process.dart:322:48)
#5      runSync (package:flutter_tools/src/base/process.dart:296:10)
#6      getAdbDevices (package:flutter_tools/src/android/android_device.dart:563:23)
#7      AndroidDevices.pollingGetDevices (package:flutter_tools/src/android/android_device.dart:55:53)
<asynchronous suspension>
#8      PollingDeviceDiscovery.devices (package:flutter_tools/src/device.dart:163:56)
<asynchronous suspension>
#9      DeviceManager.getAllConnectedDevices (package:flutter_tools/src/device.dart:91:46)
<asynchronous suspension>
#10     DeviceValidator.validate (package:flutter_tools/src/doctor.dart:537:54)
<asynchronous suspension>
#11     Doctor.startValidatorTasks (package:flutter_tools/src/doctor.dart:88:56)
#12     Doctor.diagnose (package:flutter_tools/src/doctor.dart:145:41)
#13     _AsyncAwaitCompleter.start (dart:async/runtime/libasync_patch.dart:49:6)
#14     Doctor.diagnose (package:flutter_tools/src/doctor.dart:135:24)
#15     DoctorCommand.runCommand (package:flutter_tools/src/commands/doctor.dart:29:39)
#16     _AsyncAwaitCompleter.start (dart:async/runtime/libasync_patch.dart:49:6)
#17     DoctorCommand.runCommand (package:flutter_tools/src/commands/doctor.dart:28:42)
#18     FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:348:18)
#19     _asyncThenWrapperHelper.<anonymous closure> (dart:async/runtime/libasync_patch.dart:77:64)
#20     _rootRunUnary (dart:async/zone.dart:1132:38)
#21     _CustomZone.runUnary (dart:async/zone.dart:1029:19)
#22     _FutureListener.handleValue (dart:async/future_impl.dart:129:18)
#23     Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:642:45)
#24     Future._propagateToListeners (dart:async/future_impl.dart:671:32)
#25     Future._complete (dart:async/future_impl.dart:476:7)
#26     _SyncCompleter.complete (dart:async/future_impl.dart:51:12)  
#27     _AsyncAwaitCompleter.complete.<anonymous closure> (dart:async/runtime/libasync_patch.dart:33:20)
#28     _rootRun (dart:async/zone.dart:1124:13)
#29     _CustomZone.run (dart:async/zone.dart:1021:19)
#30     _CustomZone.bindCallback.<anonymous closure> (dart:async/zone.dart:947:23)
#31     _microtaskLoop (dart:async/schedule_microtask.dart:41:21)
#32     _startMicrotaskLoop (dart:async/schedule_microtask.dart:50:5)
#33     _runPendingImmediateCallback (dart:isolate/runtime/libisolate_patch.dart:114:13)
#34     _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:170:5)`

Answer 1

When I ran into this it was because the environment variable ANDROID_HOME had a space in it, in your case it would be C:\Users\Rahul Mishra\AppData\Local\Android\Sdk and there is a space between Rahul and Mishra

What I did to resolve it is make a junction to my profile that doesn't contain spaces and redirect ANDROID_HOME to it. To make a junction you would do something like:

mklink /J C:\Users\rmishra "C:\Users\Rahul Mishra"

Then in System Properties -> Environment Variables change ANDROID_HOME to point to C:\Users\rmishra\AppData\Local\Android\Sdk

Hopefully this helps