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Python starter app SSL and OTEL errors #12618

@annatisch

Description

@annatisch

Is there an existing issue for this?

  • I have searched the existing issues

Describe the bug

Running the starter app locally (on Windows) seems to start up fine, however the console logs are full of errors relating to SSL and the otel exporter.

Image

Expected Behavior

Traces being correctly displayed.

Steps To Reproduce

Run aspire new to start a new project and select the React (Vite) & FastAPI starter template.
Use aspire run to start, either directly or via VS Code

Exceptions (if any)

As screenshot above.

.NET Version info

.NET SDK:
Version: 10.0.100-rc.2.25502.107
Commit: 89c8f6a112
Workload version: 10.0.100-manifests.18c66609
MSBuild version: 18.0.0-preview-25502-107+89c8f6a11

Runtime Environment:
OS Name: Windows
OS Version: 10.0.26200
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\10.0.100-rc.2.25502.107\

.NET workloads installed:
There are no installed workloads to display.
Configured to use workload sets when installing new manifests.
No workload sets are installed. Run "dotnet workload restore" to install a workload set.

Host:
Version: 10.0.0-rc.2.25502.107
Architecture: x64
Commit: 89c8f6a112

.NET SDKs installed:
9.0.205 [C:\Program Files\dotnet\sdk]
9.0.306 [C:\Program Files\dotnet\sdk]
10.0.100-rc.2.25502.107 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 9.0.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.10 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 10.0.0-rc.2.25502.107 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 8.0.21 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.10 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 10.0.0-rc.2.25502.107 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 8.0.21 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.6 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.10 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 10.0.0-rc.2.25502.107 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
None

Environment variables:
Not set

global.json file:
Not found

Anything else?

Aspire version: 13.1.0-preview.1.25552.2+ba652c4e3b1e0ee27fd4de7ae2dd94491206de56
VSCode Aspire extension: 0.4.1
Aspire CLI log attached.
Let me know if there's any other logs or details I can provide!

apphost-22876-2025-11-03-01-23-23.log

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area-app-modelIssues pertaining to the APIs in Aspire.Hosting, e.g. DistributedApplication

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