Unable to load service index for darc-pub-dotnet-runtime-488a8a35 in WASM CI legs

[tannergooding]

Build

https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1149050

Build leg reported

NoWorkload-NoWebcil-Wasm.Build.Tests.WorkItemExecution

Pull Request

dotnet/runtime#119740

Known issue core information

Fill out the known issue JSON section by following the step by step documentation on how to create a known issue

 {
    "ErrorMessage" : "error NU1301: Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-runtime-488a8a35/nuget/v3/index.json",
    "BuildRetry": false,
    "ErrorPattern": "",
    "ExcludeConsoleLog": false
 }

@dotnet/dnceng

Release Note Category

• Feature changes/additions
• Bug fixes
• Internal Infrastructure Improvements

Release Note Description

Additional information about the issue reported

This is occurring only for the release/8.0 and release/8.0-staging legs

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1149050
Error message validated: [error NU1301: Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/darc-pub-dotnet-runtime-488a8a35/nuget/v3/index.json]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 9/18/2025 1:45:18 PM UTC

Report

Build	Definition	Test	Pull Request
1150572	dotnet/runtime	Wasm.Build.Tests.Blazor.SimpleRunTests.BlazorPublishRunTest	dotnet/runtime#119803

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	1

[tannergooding]

Also hit on dotnet/runtime#119829, dotnet/runtime#119791, dotnet/runtime#119751, and dotnet/runtime#119720