runtime: Randomly get 'The "CreateAppHost" task failed unexpectedly' error when doing CLI build of a new web app

From @DamianEdwards on Thursday, June 27, 2019 7:48:16 PM

Steps to reproduce

Create a new web app: dotnet new webapp
Repeatedly build the app from the CLI with no changes: dotnet build

Expected behavior

No errors

Actual behavior

Randomly see the following error (twice in the last 20 builds just now):

C:\src\local\BuildPerf\WebApp3.0> dotnet build                                                                                     Microsoft (R) Build Engine version 16.3.0-preview-19325-02+eca7818b1 for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

  Restore completed in 19.81 ms for C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj.
  You are using a preview version of .NET Core. See: https://aka.ms/dotnet-core-preview
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018: The "CreateAppHost" task failed unexpectedly. [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018: Microsoft.NET.Build.Tasks.ResourceUpdater+HResultException: 8007006E [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.NET.Build.Tasks.ResourceUpdater.ThrowExceptionForLastWin32Error() in /_/src/Tasks/Microsoft.NET.Build.Tasks/ResourceUpdater.cs:line 436 [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.NET.Build.Tasks.ResourceUpdater.Update() in /_/src/Tasks/Microsoft.NET.Build.Tasks/ResourceUpdater.cs:line 324 [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.NET.Build.Tasks.AppHost.Create(String appHostSourceFilePath, String appHostDestinationFilePath, String appBinaryFilePath, Boolean windowsGraphicalUserInterface, String intermediateAssembly, Logger log) in /_/src/Tasks/Microsoft.NET.Build.Tasks/AppHost.cs:line 82 [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.NET.Build.Tasks.CreateAppHost.ExecuteCore() in /_/src/Tasks/Microsoft.NET.Build.Tasks/CreateAppHost.cs:line 38 [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.NET.Build.Tasks.TaskBase.Execute() in /_/src/Tasks/Common/TaskBase.cs:line 38 [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]

Build FAILED.

C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018: The "CreateAppHost" task failed unexpectedly. [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018: Microsoft.NET.Build.Tasks.ResourceUpdater+HResultException: 8007006E [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.NET.Build.Tasks.ResourceUpdater.ThrowExceptionForLastWin32Error() in /_/src/Tasks/Microsoft.NET.Build.Tasks/ResourceUpdater.cs:line 436 [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.NET.Build.Tasks.ResourceUpdater.Update() in /_/src/Tasks/Microsoft.NET.Build.Tasks/ResourceUpdater.cs:line 324 [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.NET.Build.Tasks.AppHost.Create(String appHostSourceFilePath, String appHostDestinationFilePath, String appBinaryFilePath, Boolean windowsGraphicalUserInterface, String intermediateAssembly, Logger log) in /_/src/Tasks/Microsoft.NET.Build.Tasks/AppHost.cs:line 82 [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.NET.Build.Tasks.CreateAppHost.ExecuteCore() in /_/src/Tasks/Microsoft.NET.Build.Tasks/CreateAppHost.cs:line 38 [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.NET.Build.Tasks.TaskBase.Execute() in /_/src/Tasks/Common/TaskBase.cs:line 38 [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets(358,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [C:\src\local\BuildPerf\WebApp3.0\WebApp3.0.csproj]
    0 Warning(s)
    1 Error(s)

Time Elapsed 00:00:02.58

Environment data

dotnet --info output:

.NET Core SDK (reflecting any global.json):
 Version:   3.0.100-preview7-012649
 Commit:    3f4ab7f5c5

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.18362
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\3.0.100-preview7-012649\

Host (useful for support):
  Version: 3.0.0-preview7-27826-04
  Commit:  5c4d829254

.NET Core SDKs installed:
  2.1.700-preview-009618 [C:\Program Files\dotnet\sdk]
  2.1.800-preview-009677 [C:\Program Files\dotnet\sdk]
  2.1.800-preview-009696 [C:\Program Files\dotnet\sdk]
  2.2.204 [C:\Program Files\dotnet\sdk]
  3.0.100-preview7-012649 [C:\Program Files\dotnet\sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0-preview7.19326.10 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.0-preview7-27826-04 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.0.0-preview7-27826-04 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

Copied from original issue: dotnet/cli#11650

About this issue

Original URL
State: closed
Created 5 years ago
Reactions: 3
Comments: 66 (7 by maintainers)

Most upvoted comments

@wli3 You better monitor this thread as it’s the first position in google on “createapphost task failed unexpectedly”.

Gladskih on Mar 10, 2020

i also get this exception with .net core 3.1. it stops the whole CI

ghbeta on Feb 6, 2020

I got same issue with “Clean” and “Rebuild”, it worked fine. but it is very annoying. Severity Code Description Project File Line Suppression State Error MSB4018 The “CreateAppHost” task failed unexpectedly. Microsoft.NET.HostModel.HResultException: 8007006E at Microsoft.NET.HostModel.ResourceUpdater.Update() at Microsoft.NET.HostModel.AppHost.HostWriter.<>c__DisplayClass2_0.<CreateAppHost>g__UpdateResources|1() at Microsoft.NET.HostModel.RetryUtil.RetryOnWin32Error(Action func) at Microsoft.NET.HostModel.AppHost.HostWriter.CreateAppHost(String appHostSourceFilePath, String appHostDestinationFilePath, String appBinaryFilePath, Boolean windowsGraphicalUserInterface, String assemblyToCopyResorcesFrom) at Microsoft.NET.Build.Tasks.CreateAppHost.ExecuteCore() at Microsoft.NET.Build.Tasks.TaskBase.Execute() at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext() Acme.BookStore.Web C:\Program Files\dotnet\sdk\3.1.100-preview1-014459\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Sdk.targets 388

baoshenyi on Dec 4, 2019