Exception: Deployment failed. Output:

Question

I'm using PC and Microsoft Mixed reality headset. I got this error when I hit "Build and Run." What does this mean?

Exception: Deployment failed. Output: Length cannot be less than zero. Parameter name: length Manifest files is not valid:D:\Documents\Grace\ZEDAndMixedRealityheadset\Builds\build\bin\x64\Release\AppxManifest.xml

ApplicationLauncherImpl.RunOnLocalMachine (System.String commandLine) (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ApplicationLauncher.cs:200) ApplicationLauncherImpl.Run (.VisualStudio vs) (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ApplicationLauncher.cs:164) ApplicationLauncher.BuildAndRunOnSingle (BuildLaunchPlayerArgs args, WSABuildAndRunDeployTarget deployTarget, .VisualStudio vs) (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ApplicationLauncher.cs:51) ApplicationLauncher.BuildAndRun (BuildLaunchPlayerArgs args) (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ApplicationLauncher.cs:37) UnityEditor.WSA.BuildPostprocessor.LaunchPlayer (BuildLaunchPlayerArgs args) (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ExtensionModule.cs:112) UnityEditor.PostprocessBuildPlayer.Launch (BuildTargetGroup targetGroup, BuildTarget buildTarget, System.String path, System.String productName, BuildOptions options, UnityEditor.Build.Reporting.BuildReport buildReport) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:174) UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()

Answer 1

Answer by LT23Live · Dec 28, 2020 at 05:46 AM

Still problematic in Unity 2018.3.6

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Answer 2

Answer by UDN_bf854b32-b089-4b56-887c-0e0e33d6c3cf · Nov 03, 2018 at 10:01 AM

I have the same error, how is this resolved?

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LT23Live · Dec 28, 2020 at 06:22 AM 0

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Did you ever find out how to fix this?

Answer 3

Answer by Seathan · Apr 27, 2020 at 01:31 AM

I need an answer to this too !

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LT23Live · Dec 28, 2020 at 06:21 AM 0

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Did you have any luck?

Answer 4

Answer by julesradu · May 07, 2020 at 06:23 AM

Same problem here, but building a basic unity project (not mixed reality).

I just created an empty project in Unity 2018.4.21f1, set it to build for UWP / IL2CPP. Error is:

BuildFailedException: Deployment failed. Output: Length cannot be less than zero. Parameter name: length Manifest files is not valid:C:\Users\iuli\Desktop\IL2CPP_Test2\APP2\build\bin\x64\Release\AppxManifest.xml

Is there a solution ?

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LT23Live · Dec 28, 2020 at 06:21 AM 0

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Did you find the answer to your problem?

LT23Live · Feb 14, 2021 at 06:00 PM 0

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What i did that kind of solved it was first build a master build (not build and run). Then build and run. Even when it failed to run, it still made the package. Once the build was installed this was not a problem any longer.

Exception: Deployment failed. Output:

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