title: Unable to debug my xamarin forms app on iphone device
body: <p>I have a Xamarin.Forms app. It works great on Android Emulator and Android Devices, It also works on iPhone Simulator but I have not been able to get it to work on a physical iPhone Device. I have attached my output log below.</p>
  
  <pre><code>========== Deploy: 0 succeeded, 0 failed, 0 skipped ==========
  The app myapp.iOS is already deployed on mkimonos’s iPhone
  Launching...
  Using Xcode 11.1 found in /Applications/Xcode.app/Contents/Developer
  Xamarin.Hosting: Xamarin.Hosting
  Xamarin.Hosting:     Version: 3064e2c463 (d16-3)
  Xamarin.Hosting:     Xcode: /Applications/Xcode.app
  Xamarin.Hosting:     Xcode Version: 11.1
  Xamarin.Hosting:     Verbosity: 1
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DVTFoundation.framework/Versions/A/DVTFoundation
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DVTiPhoneSimulatorRemoteClient.framework/DVTiPhoneSimulatorRemoteClient
  Xamarin.Hosting: Loaded /Library/Developer/PrivateFrameworks/CoreSimulator.framework/CoreSimulator
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DTDeviceKitBase.framework/DTDeviceKitBase
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DVTKit.framework/DVTKit
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DTDeviceKit.framework/DTDeviceKit
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DTXConnectionServices.framework/DTXConnectionServices
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DVTSourceControl.framework/DVTSourceControl
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DVTServices.framework/DVTServices
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DVTPortal.framework/DVTPortal
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DVTDocumentation.framework/DVTDocumentation
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DVTAnalyticsClient.framework/DVTAnalyticsClient
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DVTAnalytics.framework/DVTAnalytics
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/SourceKit.framework/SourceKit
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/Frameworks/IDEFoundation.framework/IDEFoundation
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/IDEProducts.framework/IDEProducts
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DTGraphKit.framework/DTGraphKit
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DVTDeveloperModeHelper.framework/DVTDeveloperModeHelper
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/Frameworks/IDEKit.framework/IDEKit
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/Frameworks/IBFoundation.framework/IBFoundation
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/Frameworks/IBAutolayoutFoundation.framework/IBAutolayoutFoundation
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DebugHierarchyFoundation.framework/DebugHierarchyFoundation
  Xamarin.Hosting: Loaded /Applications/Xcode.app/Contents/SharedFrameworks/DebugHierarchyKit.framework/DebugHierarchyKit
  Xamarin.Hosting: Loaded Xcode plugins successfully.
  Xamarin.Hosting: Device discovery started
  Xamarin.Hosting: Device discovery event: Connected (63ba7f3b7fe2bcd6c40d475d75305bc223062f63)
  Xamarin.Hosting: Connected to mkimonos???s iPhone (63ba7f3b7fe2bcd6c40d475d75305bc223062f63) in 00:00:00.0022729
  Xamarin.Hosting: Connecting to 'mkimonos???s iPhone', token is 0x7fc348dd3a50
  Xamarin.Hosting: Connected to 'mkimonos???s iPhone'
  Xamarin.Hosting: Mounting developer image on 'mkimonos???s iPhone'
  Xamarin.Hosting: Mounted developer image on 'mkimonos???s iPhone'
  warning MT1043: Failed to launch the application using the instruments service. Will try launching the app using gdb service.
  Launching 'com.mycompany.myapp' on the device 'mkimonos???s iPhone'
  Launching /private/var/containers/Bundle/Application/EE713368-51AD-46E7-9DEA-86F339DFE26E/myapp.iOS.app -monodevelop-port 10000 -connection-mode usb
  Xamarin.Hosting: Sending command: $A192,0,2f707269766174652f7661722f636f6e7461696e6572732f42756e646c652f4170706c69636174696f6e2f45453731333336382d353141442d343645372d394445412d3836463333394446453236452f53616c65734170702e694f532e617070,34,1,2d6d6f6e6f646576656c6f702d706f7274,10,2,3130303030,32,3,2d636f6e6e656374696f6e2d6d6f6465,6,4,757362#81
  Xamarin.Hosting: Received command: OK
  Xamarin.Hosting: Sending command: $qLaunchSuccess#a5
  Xamarin.Hosting: Received command: EUnspecified
  
  
  The app has been terminated.
  Launch failed. The app 'myapp.iOS' could not be launched on 'mkimonos’s iPhone'. Error: error MT1007: Failed to launch the application '/Users/sedev/Library/Caches/Xamarin/mtbs/builds/myapp.iOS/f5f8a43c46ecffa0b819bda005d93907/bin/iPhone/Debug/myapp.iOS.app' on the device 'mkimonos???s iPhone': Failed to launch the application 'com.mycompany.myapp' on the device 'mkimonos???s iPhone': Application failed to launch: EUnspecified. You can still launch the application manually by tapping on it.. Please check the logs for more details.
  The app has been terminated.
  </code></pre>
  
  <p><strong>---Log----</strong></p>
  
  <pre><code>Xamarin.Messaging.Client.MessagingClient|Error|0|An error occurred on the receiver while executing a post for topic xvs/idb/16.3.0.275/launch-app and client vs16132oolad
  Xamarin.Messaging.Exceptions.MessagingRemoteException: An error occurred on client IDB1630275 while executing a reply for topic xvs/idb/16.3.0.275/launch-app ---&gt; Xamarin.Messaging.Exceptions.MonotouchException: error MT1007: Failed to launch the application '/Users/sedev/Library/Caches/Xamarin/mtbs/builds/myapp.iOS/f5f8a43c46ecffa0b819bda005d93907/bin/iPhone/Debug/myapp.iOS.app' on the device 'mkimonos???s iPhone': Failed to launch the application 'com.mycompany.myapp' on the device 'mkimonos???s iPhone': Application failed to launch: EUnspecified. You can still launch the application manually by tapping on it.
    at Xamarin.Messaging.IDB.MTouch.RunAsync (System.Collections.Generic.IList`1[T] parameters, System.Threading.CancellationToken cancellationToken, System.Func`2[T,TResult] exitCondition, Xamarin.Messaging.IDB.MTouchProcessType processType, System.Action`1[T] reportProgress, System.Action`1[T] handleOutput) [0x00255] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.IDB.MTouch.LaunchAsync (Xamarin.Messaging.IDB.Contracts.AppInfo appInfo, Xamarin.Messaging.IDB.Contracts.Simulator simulator, System.Boolean debugging, System.Int32 port, System.Action`1[T] reportProgress) [0x001d0] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.RunMTouchAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message, System.Int32 port) [0x001a8] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteOnPhysicalDeviceWithoutAssetsAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x00091] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteOnPhysicalDeviceAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x0019b] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x00104] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.Client.RequestHandler`2[TMessage,TResult].HandleAsync (TMessage message) [0x0010e] in &lt;7a4eb22bf69741c1ae63de89827712f0&gt;:0 
    at Xamarin.Messaging.Client.MessageHandlerManager+&lt;&gt;c__DisplayClass17_1`2[TMessage,TResult].&lt;RegisterHandlerAsync&gt;b__2 () [0x00084] in &lt;7a4eb22bf69741c1ae63de89827712f0&gt;:0 
    at Xamarin.Messaging.Client.MessagingClient.ReplyAsync[TRequest,TResponse] (Xamarin.Messaging.Client.IRequest`1[T] request, Xamarin.Messaging.MessagePriority priority, System.Func`1[TResult] replyFunctionAsync) [0x000c5] in &lt;7a4eb22bf69741c1ae63de89827712f0&gt;:0 
     --- End of inner exception stack trace ---
     at Xamarin.Messaging.Client.MessagingClient.&lt;PostAsync&gt;d__23`2.MoveNext() in E:\A\_work\171\s\External\messaging\src\Xamarin.Messaging.Client\MessagingClient.cs:line 183
  Xamarin.VisualStudio.IOS.IdbClient|Error|0|Launch failed. The app 'myapp.iOS' could not be launched on 'mkimonos’s iPhone'. Error: error MT1007: Failed to launch the application '/Users/sedev/Library/Caches/Xamarin/mtbs/builds/myapp.iOS/f5f8a43c46ecffa0b819bda005d93907/bin/iPhone/Debug/myapp.iOS.app' on the device 'mkimonos???s iPhone': Failed to launch the application 'com.mycompany.myapp' on the device 'mkimonos???s iPhone': Application failed to launch: EUnspecified. You can still launch the application manually by tapping on it.. Please check the logs for more details.
  Xamarin.Messaging.Exceptions.MonotouchException: error MT1007: Failed to launch the application '/Users/sedev/Library/Caches/Xamarin/mtbs/builds/myapp.iOS/f5f8a43c46ecffa0b819bda005d93907/bin/iPhone/Debug/myapp.iOS.app' on the device 'mkimonos???s iPhone': Failed to launch the application 'com.mycompany.myapp' on the device 'mkimonos???s iPhone': Application failed to launch: EUnspecified. You can still launch the application manually by tapping on it.
    at Xamarin.Messaging.IDB.MTouch.RunAsync (System.Collections.Generic.IList`1[T] parameters, System.Threading.CancellationToken cancellationToken, System.Func`2[T,TResult] exitCondition, Xamarin.Messaging.IDB.MTouchProcessType processType, System.Action`1[T] reportProgress, System.Action`1[T] handleOutput) [0x00255] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.IDB.MTouch.LaunchAsync (Xamarin.Messaging.IDB.Contracts.AppInfo appInfo, Xamarin.Messaging.IDB.Contracts.Simulator simulator, System.Boolean debugging, System.Int32 port, System.Action`1[T] reportProgress) [0x001d0] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.RunMTouchAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message, System.Int32 port) [0x001a8] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteOnPhysicalDeviceWithoutAssetsAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x00091] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteOnPhysicalDeviceAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x0019b] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x00104] in &lt;d8be3adffa5b48778dec947885285f36&gt;:0 
    at Xamarin.Messaging.Client.RequestHandler`2[TMessage,TResult].HandleAsync (TMessage message) [0x0010e] in &lt;7a4eb22bf69741c1ae63de89827712f0&gt;:0 
    at Xamarin.Messaging.Client.MessageHandlerManager+&lt;&gt;c__DisplayClass17_1`2[TMessage,TResult].&lt;RegisterHandlerAsync&gt;b__2 () [0x00084] in &lt;7a4eb22bf69741c1ae63de89827712f0&gt;:0 
    at Xamarin.Messaging.Client.MessagingClient.ReplyAsync[TRequest,TResponse] (Xamarin.Messaging.Client.IRequest`1[T] request, Xamarin.Messaging.MessagePriority priority, System.Func`1[TResult] replyFunctionAsync) [0x000c5] in &lt;7a4eb22bf69741c1ae63de89827712f0&gt;:0 
  </code></pre>
  
  <hr>
  
  <p><strong>I created a new project and created a new provisioning profile to sign it. 
  I added "-v -v -v -v" mtouch arguments in .iOS properties.
  I have attached the build output log and debug log to provide more details.</strong></p>
  
  <p><strong><em>Note: this issue also exists for a new xamarin forms app straight from the template</em></strong></p>
  
  <p><strong>Build Log</strong></p>
  
  <pre><code>1&gt;------ Rebuild All started: Project: TestXamarinApp, Configuration: Debug Any CPU ------
  1&gt;TestXamarinApp -&gt; C:\Users\ooladejo\source\repos\TestXamarinApp\TestXamarinApp\TestXamarinApp\bin\Debug\netstandard2.0\TestXamarinApp.dll
  2&gt;------ Rebuild All started: Project: TestXamarinApp.iOS, Configuration: Debug iPhone ------
  2&gt;  Executing SayHello Task to establish a connection to a Mac Server. 
  2&gt;                           Properties: SessionId=b2d95c84baf5210e5ace46d00f31f3f1, 
  2&gt;                              ServerPort=53786, 
  2&gt;                              ServerAddress=182.1.1.1, 
  2&gt;                              ServerUser=Sedev, 
  2&gt;                              ServerPassword=, 
  2&gt;                              SSHKey=, 
  2&gt;                              SSHPassPhrase=,
  2&gt;                              AppName=TestXamarinApp.iOS,
  2&gt;                              ContinueOnDisconnected=False
  2&gt;  Connecting to Mac server 182.1.1.1...
  2&gt;  Executing SayHello Task to establish a connection to a Mac Server. 
  2&gt;                           Properties: SessionId=b2d95c84baf5210e5ace46d00f31f3f1, 
  2&gt;                              ServerPort=53786, 
  2&gt;                              ServerAddress=182.1.1.1, 
  2&gt;                              ServerUser=Sedev, 
  2&gt;                              ServerPassword=, 
  2&gt;                              SSHKey=, 
  2&gt;                              SSHPassPhrase=,
  2&gt;                              AppName=TestXamarinApp.iOS,
  2&gt;                              ContinueOnDisconnected=False
  2&gt;  Connecting to Mac server 182.1.1.1...
  2&gt;  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 Resources/tab_about.png obj/iPhone/Debug/optimized/tab_about.png 
  2&gt;  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 "Resources/tab_about@2x.png" "obj/iPhone/Debug/optimized/tab_about@2x.png" 
  2&gt;  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 "Resources/tab_about@3x.png" "obj/iPhone/Debug/optimized/tab_about@3x.png" 
  2&gt;  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 Resources/tab_feed.png obj/iPhone/Debug/optimized/tab_feed.png 
  2&gt;  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 "Resources/tab_feed@2x.png" "obj/iPhone/Debug/optimized/tab_feed@2x.png" 
  2&gt;  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 "Resources/tab_feed@3x.png" "obj/iPhone/Debug/optimized/tab_feed@3x.png" 
  2&gt;  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 Resources/xamarin_logo.png obj/iPhone/Debug/optimized/xamarin_logo.png 
  2&gt;  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 "Resources/xamarin_logo@2x.png" "obj/iPhone/Debug/optimized/xamarin_logo@2x.png" 
  2&gt;  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/pngcrush -q -iphone -f 0 "Resources/xamarin_logo@3x.png" "obj/iPhone/Debug/optimized/xamarin_logo@3x.png" 
  2&gt;  No way to resolve conflict between "System.Runtime.Serialization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" and "System.Runtime.Serialization, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e". Choosing "System.Runtime.Serialization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" arbitrarily.
  2&gt;C:\Program Files (x86)\Microsoft Visual Studio\2019\Professional\MSBuild\Current\Bin\Microsoft.Common.CurrentVersion.targets(2106,5): warning MSB3277: Found conflicts between different versions of "System.Numerics" that could not be resolved.  These reference conflicts are listed in the build log when log verbosity is set to detailed.
  2&gt;  TestXamarinApp.iOS -&gt; C:\Users\ooladejo\source\repos\TestXamarinApp\TestXamarinApp\TestXamarinApp.iOS\bin\iPhone\Debug\TestXamarinApp.iOS.exe
  2&gt;  Detected signing identity:
  2&gt;    Code Signing Key: "iPhone Developer: Marios Kimonos (************)" (182CD0EEF*************************)
  2&gt;    Provisioning Profile: "Test App Profile" (23666d10******************************)
  2&gt;    Bundle Id: com.testdomain.testxamarinapp
  2&gt;    App Id: 27R4SA28KL.com.testdomain.testxamarinapp
  2&gt;  /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/bin/mtouch @/Users/sedev/Library/Caches/Xamarin/mtbs/builds/TestXamarinApp.iOS/b2d95c84baf5210e5ace46d00f31f3f1/obj/iPhone/Debug/response-file.rsp -v -v -v -v 
  2&gt;  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/dsymutil -t 4 -z -o bin/iPhone/Debug/TestXamarinApp.iOS.app.dSYM bin/iPhone/Debug/TestXamarinApp.iOS.app/TestXamarinApp.iOS 
  2&gt;  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/strip -i -s obj/iPhone/Debug/mtouch-symbols.list bin/iPhone/Debug/TestXamarinApp.iOS.app/TestXamarinApp.iOS 
  2&gt;  /usr/bin/mdimport bin/iPhone/Debug/TestXamarinApp.iOS.app/../ 
  2&gt;  /usr/bin/codesign --verify -vvvv -R='anchor apple generic and certificate 1[field.1.2.840.113635.100.6.2.1] exists and (certificate leaf[field.1.2.840.113635.100.6.1.2] exists or certificate leaf[field.1.2.840.113635.100.6.1.4] exists)' bin/iPhone/Debug/TestXamarinApp.iOS.app 
  ========== Rebuild All: 2 succeeded, 0 failed, 0 skipped ==========
  </code></pre>
  
  <p><strong>Debug Log</strong></p>
  
  <pre><code>Xamarin.Messaging.Client.MessagingClient|Error|0|An error occurred on the receiver while executing a post for topic xvs/idb/16.3.0.277/launch-app and client vs2980oolad
  Xamarin.Messaging.Exceptions.MessagingRemoteException: An error occurred on client IDB1630277 while executing a reply for topic xvs/idb/16.3.0.277/launch-app ---&gt; Xamarin.Messaging.Exceptions.MonotouchException: error MT1007: Failed to launch the application '/Users/sedev/Library/Caches/Xamarin/mtbs/builds/TestXamarinApp.iOS/b2d95c84baf5210e5ace46d00f31f3f1/bin/iPhone/Debug/TestXamarinApp.iOS.app' on the device 'mkimonos???s iPhone': Failed to launch the application 'com.testdomain.testxamarinapp' on the device 'mkimonos???s iPhone': Application failed to launch: EUnspecified. You can still launch the application manually by tapping on it.
    at Xamarin.Messaging.IDB.MTouch.RunAsync (System.Collections.Generic.IList`1[T] parameters, System.Threading.CancellationToken cancellationToken, System.Func`2[T,TResult] exitCondition, Xamarin.Messaging.IDB.MTouchProcessType processType, System.Action`1[T] reportProgress, System.Action`1[T] handleOutput) [0x00255] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.IDB.MTouch.LaunchAsync (Xamarin.Messaging.IDB.Contracts.AppInfo appInfo, Xamarin.Messaging.IDB.Contracts.Simulator simulator, System.Boolean debugging, System.Int32 port, System.Action`1[T] reportProgress) [0x001d0] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.RunMTouchAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message, System.Int32 port) [0x001a8] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteOnPhysicalDeviceWithoutAssetsAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x00091] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteOnPhysicalDeviceAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x0019b] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x00104] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.Client.RequestHandler`2[TMessage,TResult].HandleAsync (TMessage message) [0x0010e] in &lt;8eeac389ee7c4078bb43eca6a43b5be2&gt;:0 
    at Xamarin.Messaging.Client.MessageHandlerManager+&lt;&gt;c__DisplayClass17_1`2[TMessage,TResult].&lt;RegisterHandlerAsync&gt;b__2 () [0x00084] in &lt;8eeac389ee7c4078bb43eca6a43b5be2&gt;:0 
    at Xamarin.Messaging.Client.MessagingClient.ReplyAsync[TRequest,TResponse] (Xamarin.Messaging.Client.IRequest`1[T] request, Xamarin.Messaging.MessagePriority priority, System.Func`1[TResult] replyFunctionAsync) [0x000c5] in &lt;8eeac389ee7c4078bb43eca6a43b5be2&gt;:0 
     --- End of inner exception stack trace ---
     at Xamarin.Messaging.Client.MessagingClient.&lt;PostAsync&gt;d__23`2.MoveNext() in E:\A\_work\275\s\External\messaging\src\Xamarin.Messaging.Client\MessagingClient.cs:line 183
  Xamarin.VisualStudio.IOS.IdbClient|Error|0|Launch failed. The app 'TestXamarinApp.iOS' could not be launched on 'mkimonos’s iPhone'. Error: error MT1007: Failed to launch the application '/Users/sedev/Library/Caches/Xamarin/mtbs/builds/TestXamarinApp.iOS/b2d95c84baf5210e5ace46d00f31f3f1/bin/iPhone/Debug/TestXamarinApp.iOS.app' on the device 'mkimonos???s iPhone': Failed to launch the application 'com.testdomain.testxamarinapp' on the device 'mkimonos???s iPhone': Application failed to launch: EUnspecified. You can still launch the application manually by tapping on it.. Please check the logs for more details.
  Xamarin.Messaging.Exceptions.MonotouchException: error MT1007: Failed to launch the application '/Users/sedev/Library/Caches/Xamarin/mtbs/builds/TestXamarinApp.iOS/b2d95c84baf5210e5ace46d00f31f3f1/bin/iPhone/Debug/TestXamarinApp.iOS.app' on the device 'mkimonos???s iPhone': Failed to launch the application 'com.testdomain.testxamarinapp' on the device 'mkimonos???s iPhone': Application failed to launch: EUnspecified. You can still launch the application manually by tapping on it.
    at Xamarin.Messaging.IDB.MTouch.RunAsync (System.Collections.Generic.IList`1[T] parameters, System.Threading.CancellationToken cancellationToken, System.Func`2[T,TResult] exitCondition, Xamarin.Messaging.IDB.MTouchProcessType processType, System.Action`1[T] reportProgress, System.Action`1[T] handleOutput) [0x00255] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.IDB.MTouch.LaunchAsync (Xamarin.Messaging.IDB.Contracts.AppInfo appInfo, Xamarin.Messaging.IDB.Contracts.Simulator simulator, System.Boolean debugging, System.Int32 port, System.Action`1[T] reportProgress) [0x001d0] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.RunMTouchAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message, System.Int32 port) [0x001a8] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteOnPhysicalDeviceWithoutAssetsAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x00091] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteOnPhysicalDeviceAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x0019b] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.IDB.LaunchAppMessageHandler.ExecuteAsync (Xamarin.Messaging.IDB.Contracts.LaunchAppMessage message) [0x00104] in &lt;1d6787a7a52349bd95d3beb793a73b9d&gt;:0 
    at Xamarin.Messaging.Client.RequestHandler`2[TMessage,TResult].HandleAsync (TMessage message) [0x0010e] in &lt;8eeac389ee7c4078bb43eca6a43b5be2&gt;:0 
    at Xamarin.Messaging.Client.MessageHandlerManager+&lt;&gt;c__DisplayClass17_1`2[TMessage,TResult].&lt;RegisterHandlerAsync&gt;b__2 () [0x00084] in &lt;8eeac389ee7c4078bb43eca6a43b5be2&gt;:0 
    at Xamarin.Messaging.Client.MessagingClient.ReplyAsync[TRequest,TResponse] (Xamarin.Messaging.Client.IRequest`1[T] request, Xamarin.Messaging.MessagePriority priority, System.Func`1[TResult] replyFunctionAsync) [0x000c5] in &lt;8eeac389ee7c4078bb43eca6a43b5be2&gt;:0 
  </code></pre>