Open
Description
Describe the bug
I received this error when trying to compile/publish for net9.0-macos:
Applications published to a single-file are required to use the application host. You must either set PublishSingleFile to false or set UseAppHost to true.
However the actual condition that raises this exception is:
<NETSdkError Condition="'$(PublishSingleFile)' == 'true' and '$(UseAppHost)' != 'true' and '$(PublishAot)' != 'true'"
ResourceName="CannotHaveSingleFileWithoutAppHost" />
Of the condition above, it turns out that in my case the specific problem was this part: '$(PublishAot)' != 'true'" .
Enabling "Publish Native AOT" fixed the problem -- The error went away and it compiled. Despite the error message's description.
TL;DR:
Put simply, the error description does not mention the possibility that Native AOT is the problem, and misleadingly only mentions UseAppHost which wasn't the issue at all, despite Native AOT clearly being in the condition for the exception.
To Reproduce
This is my publish profile:
<?xml version="1.0" encoding="utf-8"?>
<!-- https://go.microsoft.com/fwlink/?LinkID=208121. -->
<Project>
<PropertyGroup>
<Configuration>Release</Configuration>
<Platform>Any CPU</Platform>
<PublishDir>bin\Release\net9.0-windows\publish\osx-arm64\</PublishDir>
<PublishProtocol>FileSystem</PublishProtocol>
<_TargetId>Folder</_TargetId>
<TargetFramework>net9.0-macos</TargetFramework>
<RuntimeIdentifier>osx-arm64</RuntimeIdentifier>
<SelfContained>false</SelfContained>
<PublishSingleFile>true</PublishSingleFile>
</PropertyGroup>
</Project>
And this line is in the .csproj:
<PublishAot>False</PublishAot>
Exceptions (if any)
Severity Code Description Project File Line Suppression State Details
Error Applications published to a single-file are required to use the application host. You must either set PublishSingleFile to false or set UseAppHost to true. PlexShowSubtitlesOnRewind c:\program files\dotnet\sdk\9.0.200\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.Publish.targets 197
Further technical details
dotnet info output:
PM> dotnet --info
.NET SDK:
Version: 9.0.200
Commit: 90e8b202f2
Workload version: 9.0.200-manifests.5c4e24dc
MSBuild version: 17.13.8+cbc39bea8
Runtime Environment:
OS Name: Windows
OS Version: 10.0.26100
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\9.0.200\
.NET workloads installed:
[macos]
Installation Source: SDK 9.0.200, VS 17.14.35906.104
Manifest Version: 15.2.9180/9.0.100
Manifest Path: c:\program files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.macos\15.2.9180\WorkloadManifest.json
Install Type: Msi
[maui-windows]
Installation Source: VS 17.14.35906.104
Manifest Version: 9.0.14/9.0.100
Manifest Path: c:\program files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.maui\9.0.14\WorkloadManifest.json
Install Type: Msi
[ios]
Installation Source: VS 17.14.35906.104
Manifest Version: 18.2.9180/9.0.100
Manifest Path: c:\program files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.ios\18.2.9180\WorkloadManifest.json
Install Type: Msi
[android]
Installation Source: VS 17.14.35906.104
Manifest Version: 35.0.50/9.0.100
Manifest Path: c:\program files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.android\35.0.50\WorkloadManifest.json
Install Type: Msi
[maccatalyst]
Installation Source: VS 17.14.35906.104
Manifest Version: 18.2.9180/9.0.100
Manifest Path: c:\program files\dotnet\sdk-manifests\9.0.100\microsoft.net.sdk.maccatalyst\18.2.9180\WorkloadManifest.json
Install Type: Msi
Configured to use loose manifests when installing new manifests.
Host:
Version: 9.0.3
Architecture: x64
Commit: 831d23e561
.NET SDKs installed:
9.0.104 [C:\Program Files\dotnet\sdk]
9.0.200 [C:\Program Files\dotnet\sdk]
.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 3.1.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.4 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.14 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 3.1.8 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.15 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.4 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.13 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.14 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]
Environment variables:
Not set
global.json file:
Not found
Microsoft Visual Studio Enterprise 2022 (64-bit) - Preview
Version 17.14.0 Preview 2.0